worst deal ever

Logged a case weeks ago dealership called for my car back and did nothing today the service light came on yet their claimed to do a major service before I bought the car that's why I paid deposit .my car is been in and out of the dealership they do nothing with it just give me stories even on hello peter they do nothing I just want to inform people I had to buy a battery wipers r bad service light is on and I bought the car 20 august it has spent lot time at dealership its bad please be careful guys even thought I submitted to ombudsman people must know