We've just been.

After 2 hours of banter and four dishes we decided to get the bill.

I explained to the waitress in Cantonese that my friend (Majuki; should be cxua but it's not obvious from his redacted card slip) had a problem with the card charge last time and whilst we are not asking for any compensation we would like to see how the charge is made. She said she will fetch the manager.

The manager arrived shortly after and I explained the problem. He showed us to the card terminal and attempted to charge Majuki's CSP. I admit I had the better view of the terminal so I will describe what I saw.

1. Manager puts card into chip reader slot of card terminal
2. Terminal displays "Connecting" in English and Chinese and counts down from about 40
3. For about *2* seconds, the display shows "Enquiry" in English (and some Chinese characters I can't see as I was peeking beside the manager in the very cramped cashier's closet). In the centre of the bottom edge I see "Opt" but there is no button directly corresponding to the button.
4. Once it times out, the countdown continues
5. The carbon DCC slip is printed out with the tick boxes .

The manager then voids the slip. The USD amount is shown as credited.

I asked the manager to repeat once, but press cancel in (3). He duly did, the countdown contined but the result (and the void) is still the same.

Majuki then asked if there is any post-transaction input he can make. The manager confirmed no.

I then asked the manager:
"Who is the acquirer? Global Payments?"
"Not that"
"BoC"
"Not that either"
"Do you mind if I ask who it is?"
"HSBC"

I thanked the manager and presented my HSBC HK Plat Visa for payment. He voided majuki's second slip and charged mine.

I confirmed HSBC cannot be an acquirer so when an merchant says his acquirer is HSBC he meant Global Payments (confirmed here http://www.visa-asia.com/ap/hk/en_US...ingbanks.shtml) - probably HSBC handles all post-acquisition remittance to the merchants so they are not aware of Global Payments' role at all.

I also think Greyhound is not to blame in all this. The manager is profesional, apologetic for the previous DCC and co-operative even though he did not invite us to solve his DCC problem (unlike moondog's 蛇口 restaurant).

I await majuki's redacted photos of his CSP slips. I will also send a PM to both majuki and cxua.