I just spent 5 minutes trying to convince the customer care hotline that a 770 does not have a service provider and does have a serial number with letters and numbers.
That was after the first argument over the fact that my personal mobile number had nothing to do with my inquiry.
After a lengthy hold while he consulted someone else, he only re-read the status off the web page "Repair in progress", expect 10-15 days.
Having already read other reports of 5-6 week waits for repair, I tried to get a better explanation, none available.
Nokia is going to have to do much better than this to sell me ANYTHING in the future.