2001 Ford Mustang Tire Problem

I bought 4 brand new tires in September and I had them balanced and had an alignment done also I changed the tire rod in the front because one was bent and new shocks, new brakes. After about 1 month I looked at the rear tires and their both dead. The wire is sticking out on both of them and it's about 1 inch strip on each tire on the inside of the tires their both on the same place on both tires. I asked the mechanic that did the work what happened and he just said that I was burning tire and I don't even drive that way, also he didn't even want to look at the car he just said I would have to buy 2 brand new tires and I don't know what to do. The car has been parked since then because of all the snow. What could be the problem, maybe the tires? Or maybe the car?