Poor service - DOA and asked to return to their supplier!?

I ordered HDD and RAM on the 29th November and received them on the 10th Dec. Tested the HDD the night of receiving it and it was DOA. Sent email no response, calls kept on cutting off. Got response today only to find out I need to return the item to supplier that supp**** them the HDD. Is it right that I must do your job by returning the item to your supplier? After pointing that out in the email, I can return the item back to them but will take 7-15 working days to resolve and said it is faster for me to have the item returned to supplier. It is a surveillance hard disk drive and this December I'd better pray nothing bad happens....thanks for the great service.....