Star Tac ST7868W

hello everyone, i recently purchased a star tac from a friend simpily cause he updated to a newer model and i just like the ST. On the down side i took the phone to my cellular provider to activate and they could not activate due to the previous lock code from my friend's provider. so my friend and i went to his provider to retrieve the lock code. you know those jokers wouldn't let us have it! the only way i could utilize the phone is to change my service<--- not with those *****! with that being said im looking for a way to unlock or some way to utilize my phone. any suggestions would greatly be appreciated!!! looks like i found a new hobby!

peabody