This is a screenshot from 5 years ago.. with the exact same issue.. I would have commented there, but it seems the thread is closed to comment
Seems this is a long time ongoing issue for T-mobile.. I have a brand new phone, I am a brand new customer, but this one way calling issue has been around for at least 5 years according to the forum... If that's the case then it is unlikely that I will get my problem solved. Ugh
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