Dedra, just call Cricket and tell them that you want the unlock code for your phone. no "please", no being nice. And tell the rep that if you get anything from the him or her but a date by which you can expect the code, you'll immediately after getting off the phone file an FCC complaint. And if you don't have the code - or it doesn't work - by the end of that day, you'll be filing a complaint right after midnight on that day.
Scroll up to post #24 for a link to the complaint form. Federal law requires that they get the code for you. "We can't" just isn't an option. "The amount of the fine is" is an option the FCC has. So is "and you have until xxx to pay it" is another one. And they use those options all the time. Once the FCC processes a complaint like this, the only way Cricket can get out of the fine is to provide the FCC with the date on which they provided you with the unlock code. (The FCC will verify that with you, if Cricket uses that defense - and their legal people know it. Cricket doesn't want to play "shoot it out" with the FCC. [Even AT&T backed down against them.])
(Oh, there's another option Cricket has - that's to send you an unlocked phone. Compared to the fine for ONE DAY of violation, flying you one by personal courier would be cheap.)