Mtn customer service

does Mtn credit control department exist? Or is just to make themselves look good to customers? I called yesterday 02/07/2019 and I was put on hold for more than 30min while been transferred to the credit controller. I called today 03/07/2019 and was on hold again for only God knows how long & consultant said she will send them email to call me, no one ever got back to me I called again to around 4pm to follow up & I was told credit controllers are busy is month end ???? I've noticed that I haven't debited and is now the 2nd I call & I was told my account is on cash payment, when I ask for goodness sake who said it mst go to cash payment or who decided to do that that's when I'm been transferred to the department that doesn't exist or useless department that doesn't want to take calls or what ever it might be. Today 5pm my phone is suspended, I still don't have clarity why my phone is suspended and if they couldn't debit my account why was I been notified that they are unable to debit my account b4 they suspend my account or this could have been resolved if they answered my calls yesterday and 2day morning or got back to me. Mtn customer service is nonsense, poor, masepa feela. If could I was gonna leave them in the blink of an eye but I was told if I leave them I'm gonna lose my number ????♀️