Symphony Limited — The dealer hemkunth electronics moradabad gave us defected cooler. I need refund or exchange of product

We purchased symphony cloud wall mounted cooler on 28th June. The shop from which we purchased is hemkunt electronic moradabad. They have given us defected product. It's not cooling as water is not picking up because of which it's giving warm air. We registered the complain to symphony service center of moradabad pin code 244001. Firstly the technician mr Mohd waseem forced us to accept that it's alright when we refuse he opened up the cooler and saw that magnet that pull the water was not working. He said that he have changed it. But still the cooler is not working. We updated the same to technician however he was not ready to listen. We again registered a fresh complain today BY[protected] and surprisingly the same technician picked up the call and refused to come and see the cooler.
Firstly I got the defected cooler which the shop keeper is not ready to exchange or change. Secondly the technician assigned is not listing. If this is the type of tie up and services symphony company provide to their customer then No one should purchase this company product ever. It's pathetic and waste of money. I need my refund or immediate exchange of product.