IPhone Unlocking Through AT&T?

I bought an iPhone 4 from a friend after they upgraded to iPhone 5, and I want to unlock it. It doesn't have service on it at the moment, but I want to use T-Mobile. The phone has a good IMEI.

I sent the unlock request through att's unlocking service and I used my name, SSN, etc. But the old account number my friend had because that was the phone number…

Are they going to black list my iPhone because my info doesn't match the account phone # now? I'm worried… And if so, should I unlock it with a 3rd party before they could blacklist it?

Thanks! Xx

Added (1). Are they going to contact my friend about this? I don't care if they do, because it's never been reported stole, I just want to know if i'm at risk of my phone becoming black listed

Added (2). Can I cancel my iphone unlock request?

According to:
https://www.att.com/...ent/en_US/

As long as you are in contact with your friend who sold you the phone and the phone has not been reported stolen - they will not blacklist you.

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