Amazon India — no proper assistance from amazon

Address:	Thane, Maharashtra, 401107
Website:	Amazon

In past 6 months i have ordered quite a few products from amazon.
First order mop everything was good and going good so far.
Second order hindware heater, here's were problem started, did not receive the installation items had to contact many a times to get those missing parts as it was clearly mentioned in the product description and i had also confirmed with amazon and seller before placing the order.
Third order inalsa food processor ordered first time and there was a part missing i requested to just send the missing part as was really in need to use the product but i was told not possible had to return the product and wait for refund which took around 3 weeks, then after consulting and confirming several times with amazon i again ordered same product on a higher price than earlier again received a broken handle of the main jar, this is so inconvenient.
And everytime when i contact amazon they just we cannot do anything as it's a seller product what's happening this is not the right service, should i just keep on ordering and refunding just because my huge amount is stuck in amazon pay???