how can i unfreeze phone?

i bought a samsung lily e420 on ebay. said was unlocked. it wasnt. should sent back, but didnt. been in drawer for months. daughter found, fallen in love with. but dont know password, its locked to orange. now its frozen. would appreciate any help. tried unlocking codes and paid for them from internet, didnt work, hence its now frozen. would appreciate any advice very much! even if i have to go with orange for her, i will. would rather use any sim