I purchased Haier Refrigerator. Worst service for ...

I purchased Haier Refrigerator. Worst service for delivery. Delivery people are rude. I purchased new refrigerator in exchange offer. In shop they said that same people will take old one but delivery guy denied for that. After multiple complain it was worked.

Also in exchange offer, they fool the people. on offer its written that MRP is 36600 and 11750 Rs for old fridge in exchange.
But on invoice they write 25850 as price of new one and consider only 1000 Rs as exchange.... NOT APPRECIATED...