Originally Posted by
Often1
Credit card dispute won't work and can hurt downstream. What US did is poor CS, but it's not wrong under the t&c. They are entitled to collect the fare difference and you could have cancelled at the airport and not flown. In a chargeback, you will lose. Put simply, poor CS doesn't translate into a legal right to a refund of the $108.
Worse is that there are other threads here about individuals who have sought baseless chargebacks, running into problems with the CC issuer. Chargeback investigations are costly and time-consuming to the issuer and they'd rather lose a customer who puts them through too many of them.
Save the chargebacks for something really big or where you have a right to the credit.
I've used an Amex and Chase a a couple of times to help resolve such issues when poor customer service and/or lack of response from the merchant was the cause. I've always been successful. At a minimum, it forces the merchant to respond. If they don't, typically by default the matter is decided in favor of the card holder.
That said, I don't abuse privilege of transaction disputes. I also suspect my generally high use of cards and strong repayment history plays a role in how the issuer chooses to handle such gray area disputes.