Xfinity Mobile Verification

I placed an order this morning to move my mobile plan from T-Mobile to Xfinity. After I placed the order I received an email stating I'd be getting a call to for verification before my order could be processed.

I received the call and went through a couple basic questions like name and address, Xfinity account number and last 4 of my SSN. At which point I was told the system that generates the verification questions was asking for my full SSN which they can't take over the phone so they were cancelling my order and forcing me to go to a physical store to re-place the order.

There's no way the verification could of been done over the phone and forcing me to go to a physical location?