MTN DAMAGING MY CREDIT PROFILE WITH ******* DEMANDS/DEBIT ORDER

MTN is now going for my credit worthiness due their own fault!! They failed to resolve their matter with Mondo on the funny canceled contract I was returned..... I was promised this unfulfilled contract will be reserved/canceled. Threating sms's are my way of life now. It is not stopping there, now they are HURTING my CREDIT PROFILE in the process. See below what I received since I last posted my review and it is not stopping:

Dear Customer,Your query *** has been opened. Please contact call center if you require more information. Thank you for using MTN. Have a Y'ello day.

Dear Customer,Your query *** has been opened. Please contact call center if you require more information. Thank you for using MTN. Have a Y'ello day.

Dear Customer,Your query *** has been opened. Please contact call center if you require more information. Thank you for using MTN. Have a Y'ello day.

Y'ello! You need to pay MTN or your services will be stopped and it will hurt your credit rating. Please pay R 190.33 in-store or via your bank. and use billing profile BA*** as a reference. You can find the banking details on your invoice.

Will MTN erase all their UNPAID INDICATION PLACED on the credit bureaus in South Africa?

Can MTN stop the continued harrasing sms's about unpaid unauthorized debit order that should not be there. I do not have a relationship with them. I cancelled that offered and returned everything back to them!!