Well I had a similar experience with E Bay a few moths back & posted
it here. They shipped a defective product & the vendor refused to
take it back.

I used their dispute resolution mechanism to :

1. Insist on a 100% refund.
2. Pay me the return shipping costs if they want the product back.
3. Else we can let consumer court decide what's right.

They have a very difficult , time consuming & costly refund procedure
& had I used it I would have spent a lot of time & money & got
nothing. Though I used their electronic payment system & they had
all the transaction details , which even the vendor was not
disputing, they wanted me to "PROVE" the whole transaction . I stood
firm & let them know that this is contrary to the consumer laws of
the country. The vendor &/or you have to bear the costs of shipping
the defective product.

They have agreed to refund the money , though I have yet to receive
it.

If they don't in a few weeks I fully intend taking the vendor & them
to consumer court.

Send them a legal notice if you have to.

Well I too had same experience I purchased a Sauna belt from Universal sky shop and it was defective i straight away had conversation with their support team. They said they ll replace it in a week. But they passed whole month in this conversation. Then i wrote a mail to consumercourt and sent it to USS id also. They at once contacted me and the
product was replaced in 3 days.

I have not received any product even after 13 days but the status in my order history shows delivered.Rediff shopping emails me saying that its investigating but no sign of anything to be delivered.this is really fraudulent.