I just signed up for TMobile last month. They asked me for my SSN. I said seriously?? They said yes we need it for a credit check to see if we can offer you ser

I just signed up for TMobile last month. They asked me for my SSN. I said seriously?? They said yes we need it for a credit check to see if we can offer you service. I said sure... it's 123456789. "One moment sir..." "Congratulations! you have very good credit, Welcome to TMobile." ...It's baloney, I think they just try to get it for leverage if you have a bill outstanding. Anyway, very glad I gave them a fake SSN. EDIT: I did learn they use the last four digits as an initial pin in some cases, so good to remember whatever nonsense number you tell them.