Originally Posted by Majuki

I would avoid tapping and insert the card since 1) currency prompts might appear that otherwise wouldn't with a contactless transaction and 2) there would be a signature slip that you could deface by writing "DCC REFUSED" and taking a photo.

Did you have control of the terminal/screen in view the entire time of the transaction? I'm curious if DCC prompts did appear, which the merchant selected for you.



I would dispute both transactions. While the dollar amount is immaterial, that's unimportant. It's the deceptive business practices of the merchant that are important. In all likelihood, Chase will simply refund the difference, but it's possible that Chase could pursue a chargeback.

This is good timing since I have a trip to Portugal scheduled in August. I will avoid contactless transactions or perhaps try some higher value ones such that if I disputed the charge that the card issuer would be likely to pursue a chargeback.