I need instruction to send messages to USA

My mtn , does not send sms and it's a challenge to me.pleqse I need an urgent response

My data got finished. Then I went to my MTN app to buy a bundle, then I received a message that I need to update it so I did. When I was trying to login MTN just keep sending...

My data got finished. Then I went to my MTN app to buy a bundle, then I received a message that I need to update it so I did. When I was trying to login MTN just keep sending...

I can't check my balance or even use the data I just got because my mtn line keeps sending me the same massage that my line has been temporarily blocked, please I need a way to...