Suspected drive thru employee stole CC Info

Went in today for some chicken enchilada burritos. Noticed that the guy at the window used the back of my credit card to tap where all the number and rest of the info needed to make purchases is. He took a pretty long time to give my card back so I suspect when I wasn’t looking, he may have taken a picture of the number. Honestly didn’t think much of it until I got $300 charge from Walmart from a purchase made from the website, another $700 purchase from some other website, an airline gift certificate purchase from the local airport, and a couple other websites I can’t remember the name of. All of these were attempted as I froze my Debit card after I saw the first one and the bigger purchases declined. I don’t usually complain via website but I thought this might get the attention of a DM or higher so I filled out one of those survey forms. Should I go in person and have a chat with the GM and employee? Also kind of debating whether to get cops involved since none of these purchases ever went through. Or should I wait for a higher up to contact me from the form I filled out online?