TMobile Iphone Calling TMobile I Phone: Strange Behaviors

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."

 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?  Was I blocked?

Thanks!