O General — constant non functioning of A.C

We bought A.C few months back . In starting it worked very well for a month but after that it started giving us many troubles. We asked for the service many times but after every month the problem arises sometimes it create cracking voice then stops working, sometimes its fans pressure increases and decreases without using remote. Now its crossing our patience and we want you to take step as there is no use of talking to the dealer.