Consumer Redressal

I bought a Bajaj Food Factory FXI food procssor online from Shopclues.com the product was delivered to me on 6th MAR, mode of payment was COD. when we tried using it, it did not work.it makes a humming sound and does not move. I called the shopclues customecare and logged my complaint on the same day, but shopclue refused to replace the faulty product and told me to visit Bajaj service center.which i refused to as it was brrand new prouct also on the shopclues.com they said that they will replace or return the product within 10 days of delivery in case any fault is found in the product but after we got it and made payment their attitude totally changed,they told me to get a DOA certificate from Bajaj Service center i kept calling and on the 7th day they told me that letter can be issued only within 7 days oof buying the product which they never mentioned in any previous communication.They behave as if we owe something to them its awful please advise what can we do