What's worse is contactless is no longer a reliable protection against DCC. I assume you didn't have control of the terminal for the transaction?

I know this is after the fact, but in such a case I would ask the merchant to void the transaction. If the merchant refused, I'd indicate on the receipt and/or file a chargeback.

Now that international travel is picking up again we have to be vigilant for DCC for the first time in up to two years.