Originally Posted by unclefester
Most of the time when companies say the phone is unlocked, they mean it is unlocked to T-Mobile and ATT. Im pretty sure you have to use a different code for Digicel or other service providers
No. If a phone is unlocked, it will work with a SIM from any GSM provider as long as it has the proper frequencies. It's either locked to a single provider or it's unlocked.
OP, it sounds like your phone is NOT unlocked and you need to contact your seller and file a complaint with ebay if the seller does not make it right.