What’s the end of the scam here? Resale? Then they would probably have specific items. I’m thinking they possibly do a “return” in Costco and refund d onto their card. If so, it should be pretty simple and straightforward to catch the guy, no? (Leaving instacart out of this because they clearly have no interest in fixing the issue, but wouldn’t Costco want the issue fixed as well?) I’m very curious if you can find out from Costco if there were any returns done recently on your account