Nothing will probably happen from LE. IMHO you're wasting your time trying to gather evidence and investigate yourself for a prosecution. Had a card stolen locally and I literally gave the local PD a name, adress and had a merchant send video surveillance of the person using my card to them. Nothing happened and all I wanted was the dirtbag to go to jail so they couldn't do it to the next person. There's more important shit that LE has to deal with.