Sarf Trading — blackberry passport

Address:	416012
Website:	ebay.in

I have sent my bb passport to sarf trading which was under seller warrenty.
Now they are saying, your phone is working why you had sent it to chennai.
And next sentence is that - you have opened your phone outside, so we cant give you service. What does it mean? After reading all issues regarding warrenty from this company, only conclusion that online shopping is total fraud.