Mavis Discount Tire review: Brake service

I have been a long time customer of Mavis. I have not had problems until recently. I went in for an oil change at the Mavis Chastain Meadows in Marietta, GA a few weeks ago. I was told by the technician after inspection that I needed brakes. I was charged over $300 for brakes. I assumed the problem was solved. A few days later, my car started making more noise than before (screeching and scrubbing). I took the car back in for inspection and was told that it was my back brakes. It is unbelievable that I was charged for a full brake job and your technicians only serviced the front brakes. I am very dis-satisfied with the service at your location in Marietta. I am requesting a credit on my Mavis account due to unsatisfactory work on my vehicle. Mavis acct# [protected]... Vivian Taylor (678) 532.0215