Amazon India — Got different product from what I ordered.

I have placed an order for water purifier on 23rd july . But received different purifier than i ordered . Customer care execute asked three days time for the investigation and on August 1st said that was the fault from seller and assured a replacement in 3 days . Waited till August 8th ( 8 days ) and use to get out for delivery messages daily but never recived replacement product .Then the customer executive said go for a refund we will arrange pickup for the product and cancel the replacement one .Then from last 6 days I used get pickup scheduled message daily no pick up has done till August 14th .Now again pickup scheduled for August 15 th . Seems like they are playing with the customers . Sent 4 to 5 hours till now calling customer care itself . Worst experience with amazon .
Order Id[protected]