Dispute the charge with

your credit card issuer first, this will put a big pressure on Pepboy. Then start to report the incident to local or state agency, such as better buesiness bureau or you can sue them at small claim court, no fee will needed and the process is quite simple.

I believe this case Pepboy did a poor job so they have to clean it up, there is no way they can get away from this.

Before you do this, you can first tall to them about the measures you are going to take with Pepboy, then they will know you know how to protact your interest and they know they did a bad job so they may simply give up.