Worst service - has impacted my credit score negatively because of laziness and empty promises

I can't express how disappointed I am in this network provider. My credit score has decreased because they're too damn lazy to find a payment that was made 7 months ago. I've spoken and sent my bank statement to so many of their consultants but they're all full of nonsense. I don't know how many times I've been told "it's been sent to the banking/billing department and will be allocated to your account" but to this day we're running around in circles and it's affecting my credit. I don't understand what's so difficult here, about 8 people have the bank statement showing the payment made to MTN but STILL, COME ON DOES OT REALLY TAKE 7 DAMN MONTHS TO ALLOCATE A PAYMENT. Also they seem to be telling me different stories, some are still telling me my number is a contract number and others are saying it's prepaid so I really don't understand and this thing is just messing with my mental health.

I wouldn't recommend MTN, I'm sorry but it's just not what it used to be. I'm never getting a contract with you guys even if you were the cheapest in the market, NEVER EVER AGAIN.

If I could rate anything worse than 1 I would do it in a heartbeat