Pathetic Service

I am writing this message with a heavy heart. MWEB is the worst service provider I have ever encountered. I subscribed to Fiber WiFi with them and they have been deducting from my account every month as per agreement until the end of March. On the 1st of Apr they terminated their service and said it's due to unsuccessful payment of half the amount we agreed upon. That baffles me as to why they didn't debit the amount as per agreement at the end of the month as I always have sufficient money in my bank account. They terminated their service and when I tried to call them to understand what was happening I could not get hold of anyone telephonically. I sent several messages on their website but their response is " we have cancelled your services with us due to none payment" you need to make a payment to Vumatel as you owe them now. What the heck? I had an agreement with MWEB which they didn't debit my account in April and I can prove that and now cancelled my WiFi and left me stranded. I don't know what number or contact details I should use to get hold of Vumatel and what to say to them as I never had an agreement with them. I tried to subscribe with another service provider cause MWEB Cancelled their service but it was denied as they say my address still has an active SIP by Vumatel. I feel that MWEB has treated me unfairly and no one has the audacity to call me and explain this mess to me. I'm not young anymore and stuck 😭