MTN unprofessional client service!!!!

GATVOL!!! I'm struggling with MTN Mobile since January 2024 to relocate the payment that I did for my cellphone contract. I've send out 12 emails, phone calls every single week, have even gone to MTN shop proofing that I made payment in January 2024 so they can fix the problem which also the sales lady there has sent them email with proof of payment and still nothing is being done. Every time I phone them they say it's pending!!! When I ask how long the pending is going to take they can not give me an answer but just tell me to phone the following month to query. The problem is every month my phone is being suspended or I'm getting a phone call regarding my phone being in arrears which isn't. Not only this it's also giving my credit score a negative score cause MTN Staff don't know how to do their jobs. This is the worse service provider ever. They employ people that don't know what they doing. If I could I would pay off my contract and change service providers as this is unacceptable, unprofessional from MTN. I've been your client for over 6 years and this time since we did an upgrade it's only going to *******. So disappointed with you MTN!!!! Please fix this ASAP or we go to Ombudsman for poor service