Pep boys Destroyed car, missing title, nightmare Phoenix Arizona

Pep boys had my car in their possession for over 2 months. Reason after reason why it wasn't being fixed(ordering parts, wrong part, etc.) the final day came where he thought he had the right piece and yet again my car still isn't in proper functioning order. They refund me for 'work done' and hand me my keys. I go out to my car and it has been stolen out of. Stolen items include my after-market stereo deck. 2 bottles of brand name cologne and the title to my car was missing. Everything taken from the glove boxes and scattered throughout. Food that wasn't mine in the vehicle.  I then walked back into the pep boys and asked them what had happened to my car. Each of them had a different story to tell about when it happened and it was clear none were the truth. I was not contacted at any time about this incident and I then called corporate to take things to a higher measure. It had been two weeks of promised 24 business hour phone calls and I have yet to hear or receive any help from any person affiliated with pep boys and a police report has been filed.