Cricket Wireless Since acquiring a cricket phone I have had fraudulent charges to two credit card. san diego California

Since acquiring a Cricket Wireless Moto g phone. I have had fraudulent charges to the two credit cards they have on file. They are the only people that had both numbers.  I have had to cancel both cards. The call forwarding on the phone was and is set to transfer to a cell phone in Tampa, Fl. Speaking to customer service is like talkig to a wall, They all say there  nothing they can do, and refuse to let me speak to a supervisor or someone in charge.  I told them to cancel the  serrvice. I guess I will just have to the losses.