I'm using a standard T-Mobile prepaid plan with my name on it, auto-paid monthly using a CC with my name on it. The silly part is that this same phone is what t

I'm using a standard T-Mobile prepaid plan with my name on it, auto-paid monthly using a CC with my name on it. The silly part is that this same phone is what they: a) registered my account with a few years ago, b) send their 2FA codes to for normal account login. But it is unacceptable to their support system, I guess. The "unspecified reason" turned out to be me trying to transfer some money to a business checking acct that I have. That's against their ToS and could have probably been a quick reversal (when I finally got through to the right person it took about 5 minutes), but the phone verification thing gummed stuff up for a few weeks.