Pathetic service

I bought a used vehicle in July 2017 drove it for two months bt I have just discovered that my tyres are worn out and one had actually bursted and I had to replace them wth a hope that their so called tyre warranty was gonna re emburse me, bt it didn't. I also feel that they knew about the tyre problem because this useless tyre warranty was just imposed on me to purchase. Iam so disappointed and angry at audi mbombela. They ****** me