contact sprint and tell them about what happened, and they should be able to look up the phone by it's serial number (hopefully). Perhaps they will send ups to pick it up, or maybe they made a mistake and sent it to the previous address the previous owner of your house had on file with them rather than his new address.

Some people would probably say sell it on ebay and make a profit on it.

I say do the right thing and get it returned.

Alon

__________________
'92 300CE - Sold
2004 C240 - 744 - C7 Wheels - Android Radio
2002 C320 - 816 - Sport Wagon - Sold
2006 E350 Wagon - 368 - Dead
2015 GL350 Bluetec - 197U