Blackberry curve question

okay i have a blackberry curve 8330 ok so its unlocked and has been used for metro. but i am in Kansas city and there's no metro stores around here, the serial number only has half cause the sticker has been ripped so i couldn't give that . then when i click *228 it says welcome to cricket instead of metro pcs. i really need help with this cause ive been without a phone for a week and i really cant afford to be without one anymore. i really need help so if you read this please take the time do help me i would really appreciate it