Why have I not received the package?!?!?

I went to FedEx Kinko's to deliver my broken PS3 system to the Sony Warranty with a box sent to me by Sony. A week after sending it, I checked the FedEx tracking number thing and it had been delivered. More than a week now, FedEx says it is still delivered but I have still not received anything and the lady said it should have been delivered by now. Does it take that long to repair a PS3 or was it sent to the wrong address?