Finally got the obligatory post card from Chase to confirm the $49.45 credit is permanent. A simple DCC dispute has dragged on FOUR months for a measly amount of $2.30. It has been handled by no less than four Chase call centers - Indian and Philippines Call Centers, Columbus, Ohio and San Antonio, Texas Call Centers - they only handle disputes. A total of 4 reps have handled the dispute one way or the other, including a supervisor who finally felt enough was enough and closed the dispute by giving credit of the full amount merchant billed. Such a LENGTHY process for a $2.30 DCC amount is totally unbelievable.
Both the Columbus and San Antonio call centers are on recorded lines. The initial automatic anwser would tell you this the first thing.

The summary of the timeline for future reference, in case someone wants to file a dispute with Chase.

1) Filed dispute online in first week of Feb on a charge of $49.45, citing Visa Code 76 on DCC charge without customer consent. Requested the merchant reversing the DCC billing and rebilling in local currency AED.

2) An Indian rep called a few days later. briefly verifying the nature of dispute and informing how the process would be.
I got a postcard 2 weeks later basically telling me the same thing. The rep's name on the postcard though, was not the rep who made the initial phone call.

3) Towards the end of March, got a message from a US-based (Columbus) rep to call her back. After about 6 or 7 calls only to be met with voice mail message, never a call back, I called the number on my CSR card. Regular Rep immediately saw there was a note on the disputed item and transferred me to the Philippines call center. Rep in Philippines told me the merchant contested the dispute and a letter was sent to me already.

4) On April 12 I finally received the Chase letter - it actually came as a packet, consisted 2 sets of electronic records of the transaction from the processor(s). Also a print out from the processor who only agreed to "authorize" an arbitration amount of $2.30 - the amount of DCC.
Chase covering letter did not mention any of that. All it said was the merchant contested the dispute. There is a form for me to fill out and send back - 2 options, either agree with the merchant or to continue the dispute.
There is a deadline to send back the form. Unfortunately the packet arrived me within 1 day before the deadline.
The letter was signed by the same rep who left the message on my phone more than 2 weeks ago but never returned my calls.

5) I called that person again, 3 times. She finally called back 2 days later on Apr 14, Friday. Over the phone she claimed Chase could not make the merchant rebill in local currency. I have no idea whether this is indeed true or not and have no interest to find out. She proposed a resolution - that she would only remove $9.45 from the initial temporary credit, leaving $40 credit on my account and consider dispute close. I considered it very generous and agreed on the resolution. She confirmed that I could ignore the form as this phone call would supersede the form. She also said a letter would follow to confirm the final resolution.

6) I did see my card's available credit was reduced by $9.45 on Saturday but never saw any pending activities. Those who own Chase cards know Chase posting of transaction is very slow. I figure it would show up either Monday or Tuesday. Instead, on Monday the available credit changed to reflect a reduction of $49.45 - the full amount merchant billed initially, including the DCC. Nothing changed on Tuesday. I voiced my frustration and concern on this thread as we were leaving for a long trip on Wednesday. I really did not want the statement closed in a few days with a balance when we would not have internet access for the next 18 to 20 days. Someone here told me Chase allowed transfer from Chase account to the credit card account even the card account balance is zero. I waited till Wed morning to see if anything posted. Still nothing changed. I transferred money from my Chase checking to the CSR then left for the long trip.
When I finally had internet access on May 7th I checked Chase online. The full $49.45 was rebilled. There was no $40 credit.

7) Upon returning home and finally got my mail on May 26, I saw a letter from Chase signed by the person at Columbus. In it she detailed the resolution which did not happen/come thru to my account.

8) I placed calls to her before Memorial Day holiday and after the holiday, but again did not receive any call back. This time I got angry and called the toll free number of the dispute dept - reached Philippines. Told the rep I needed to talk to a US-based manager to resolve a customer service issue. Got transferred to a supervisor at San Antonio, TX. I asked the supervisor to be patient before I gave him the full scope of this matter. He went over the account quickly and indeed, notes there about the resolution but nothing actually was posted that way. He apologized that I should not have gone thru such lengthy process and still not getting what Chase promised. He told me he ordered a full reversal of the rebilling and would notate the account. So in case there is still SNAFU I could call back and tell any rep who got the call to just read the last note.

9) 2 days after the conversation, the available credit has increased by $49.45. Then the credit posted over the weekend.
A postcard arrived on June 6th confirming the credit of $49.45 is permanent. The rep's name on the post card is NOT the name of the supervisor but yet another person's name.
So all in all, 4 Chase employees have handled this dispute. Indian call center rep who initially called me. The rep in Columbus who proposed the resolution which never posted. The supervisor in San Antonio who ordered a full credit. The rep whose name appeared on the confirmation postcard.

The whole thing is surreal. I wonder how much time Chase has wasted on handling disputes the way they are handled, as my experience turned out is not unique based on the Dispute thread someone started in Chase forum.
It also wastes customer's time and causes frustration.

My suggestion to folks who want to file claim on DCC, do it over the phone unless the amount is quite large. Ask to speak to a supervisor as the first line rep would not have authority or not even understand what DCC is. Supervisors most likely would give you credit of the DCC amount right on the same call. No need for formal dispute as at the end it is still the US Banks absorb the scam charges. If the DCC amount is large enough, I suggest you first call to dispute it, then follow up with a LETTER to the address listed at the back of the statement, to protect your legal right. This is not just for DCC dispute but for all disputes. Only a letter sent to the bank would give you protection under the law.

Safe Travel to everyone.