Mercedes is Nothing not the Best Quality

I bought C 200 AMG, in 2016 at polokwane mercurious branch. I.must say I was very happy with my choice. When my car was 40000km, I reported to the Branch at Wonderboom that my car seats are torn, and I explianed to them that the leather seats that are put are not f quality and they are simply a touch of a leather not genuine hence it is cracking and tearing apart. I was told that even thought my car us still on warranty I shoukd pay 8k, and I made folkow up but was ignored. Last week someone from Mercedes Benz called me and told me that I shiukd pay 8k since mercded can only cover 3k. When I asked why because their leather seats are of poor quality, compared to other Mercedes Benz of 2003, which their leather are still in tact. I refused to pay because this is pureky poor workmanship on Mercedes Benz part. It has nothing to do with warranty or duration. I must say that I am dissappointed with Mercedes Benz customer services, and poor quakity if seats they put in their cars. I mean we are paying lots of money on these cars only to be provided with **** leather that are supposed to last. I mean I have other cars such Audi and Golf their leather arw still in tact because they are of good quality. Mercedes Benz wants money and nothing else. So their ad of saying they are the best or nothing its a lie. I need to replace my seats with proper leather seats not these ****s they put on a new car.