Facing issues since purchased

Faced power window issue 3 times in 6 months, dealer not giving proper solution. Bad experience with dealer, at the time of purchase sales person call you number of times, when you need there assistant to log your complaints they will not attend your call. They will charge you for their fault, for power window issue which occurs within 2 months they charges me for it. Under the name of free service also they charge you. Pathetic service.