Direct Express complaint: Unauthorized charges

Noticed unauthorized charges on my card called immediately cancel the card listed the charges Pizza Hut Puerto Rico Papa John’s in Ohio charges in San Francisco I live in Orange California I don’t drive and I don’t travel I’m under doctors care going to replace my knees in the upcoming months I don’t have a passport I don’t know how I bought a pizza in Puerto Rico and it was their operator who told me that’s where the charge was made I filed paperwork they denied my request so I asked them for the proof that they used so I could file a complaint they reopened it they came back with the same answer that it was me but yet no proof there have never been any Uber charges on my cards before or after or any kind of pizza charges on my card before or after we’re talking years I would appreciate any help you can give me cuz I feel they just don’t care and I see you have to get in line to complain against them I don’t know if this will do any good but I feel like I don’t have any choice