I feel you, brother.
Cell phone carriers are ruthless in USA. Locked phones, carrier locked phones are in the past even in the 3rd world countries like Thailand, Russia.
How the f*ck a cell phone that I paid for could be attached to a carrier? It does not belong to a service provider if I purchased it with my money.
In Vietnam I bought a new Nokia with AT&T logo on the phone. Had it connected to local service provider within minutes. And you know what, AT&T does not operate in Vietnam.
P.S. This is not the only way folks get ass invaded in this once great country.