I called yesterday and was routed to an overseas call center

The #1 reason I have been loyal to t-mobile for the last 10 years is because the customer service has been second to none.
The person helping me asked what my first name was. When I said Nick I was told there was no such person associated with my phone number. I paused, gritted my teeth and said what about Nicholas.(My full name) All of this happened after I verified my account by entering my social utilizing the automated system.
If this decline in customer service continues I am heading over to Sprint.