Ford Fusion Car — manufacturing defect & bad service

i bought a ford fusion a little over a yeyear ago and from day one it has been giving trouble. First the right power window burnt out then the left. For the right one they changed the part but for the left window they repaird the motor even though it was in warrenty period & my repeated request, their excuse they did not hve the part. The recent problem has been the front 2 tyres have totally worn out, when i complained to harpreet ford gurgaon they said it was the allignment which i got corrected but still the tyres were worn out even though the car had run only 11000 km. I got the car checked outside & they said it was the camber of the car that need to b corrected by ford. I went back ford & complaind again, they said that it was the allignment & nothing else. I argued with them that get my car servicdd by them & they being professionals could not even detect such an issue and rexolvd it....the current status is they r not admitting to a problem & not resolving it either.