Poor Service and No urgently to resolve my issue

I have been contacting MTN south africa from 09 September to allocate my payment to my wifi router I call them everytime the want proof of payment yet I have send a screenshot of my bank statement showing payment was made on 06 September 2024 to the account. It's like their don't care cause the attitude i get some the call center agents is like their are doing me a favor to help me sort this issue out. Two months as past no wifi and down time for my business and I'm losing money due to this inconvenience