MTN Barred number

MTN I have honestly reached my wits end. 2 days now that I have airtime yet I can not make any calls except to your call centre that have been utterly useless as NO-ONE can tell me why you have barred my number that I have used for over 12 years.

I am sick…I am sick sick of your shenanigans. I am sick and tired of this honestly. I need my number back