ID has blocked my friend's phone number so he can no longer call me, only text.  Help, please

magenta7588959

    For some reason T-Mobile has now blocked my good friend's phone number.  He can text me but always gets a busy signal when he tries to call me.  I went into the app and told it to allow his number to call, but he still cannot call me.  I can call him, though.  Help, please.  I have since disabled this app but he still can't call me.  I'm so frustrated with this.  Thank you.

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