Shopping. Rediff.com — defective product no response from service

Address:

Hyderabad, Andhra Pradesh

i have ordered a mobile phone in shopping.rediff.com .

this is my order id :7273998.

instead of the HTC mobile i got windows 7 mobile with out with out battery, sync c.d, head phone, warranty card

i have send it back to given address .

that was happened around 20days back .. till now i didnt get my product ..

but did not getting any response from them they are not lifting the phone..
please need help

my mail id is n.[protected]@gmail.com. anyway they can get my contact details by the order id.