Alreja watchs showroom - Buy watch from local shop

I had bought a watch on *nd from Alreja Watches showroom which is located in Sadat Bazaar Gurgaon but on *rd when I take the watch back, the watch starts screaming in the morning itself, due to which I go to the owner of the watch showroom and tell him the issue in the watch but he is not ready to accept that it is his mistake, then when it comes to changing the watch, he tells me that he has paid more for the same model watch, but when I take it for return, he starts threatening me saying that he will not do it and do whatever you want to do, and while making a video of the watch in his shop he eats This is not a watch from our shop. There is no price on any watch from their shop. They sell fake copy watches.