Originally Posted by Majuki

Thanks for the detailed explanation. I'm still cautious about giving merchants the benefit of the doubt under these circumstances. In the place that did it out of spite I would have flat out refused to sign for the purchase and asked them to void the transaction. I have zero tolerance for merchant games.

I feel like from these observations that some of it is a language barrier, but it other cases it's definitely willful disregard of your DCC opt-out choice. It also seems like in Poland DCC is everywhere.