Calling a TMobile Iphone :Strange Message and Ringing Behavior

I have an Iphone with a US number and I am calling a friend that has an IPhone with a US number.  My friend is most likely connected to WIFI in China.  Both of our phones use TMobile.

When I text, the color is blue and I get a delivery receipt.

When I call, I get a message I have never heard when calling an IPhone before:  saying "the person you are calling can not accept calls at this time. We are sorry for any inconvenience this may have caused."

Before today the phone would ring twice and disconnect.  When I call using a Hushed phone number, there are two rings and then I get disconnected.  So either TMobile handles the two types of numbers differently or I am blocked?

And when I tried FaceTime today, the phone rang 8 times with no answer and I hung up.

Can anyone explain the two rings and disconnect and the strange message I am getting?  

¡Gracias!