MTN POOR SERVICE RENDERED

I'm very disappointed and frustrated by the service I've been receiving from March 2024. My payment method as per agreement is debit order and the March month I was not debited and went to the branch and told me that I don't have to pay, then later my services got suspended I then called their Service Line even went to the branch same day and I was advised that I should pay R1500. 00 whereas my installment is R550.00 but I had to pay that R1500 with no explanation on why should I pay that much. Month end April I paid that R1500 as requested then month end May no debit went through, I went to the branch and the consultant advised me that due to paying that R1500 I've paid it upfront so this simply means that my account is not in arrears hence they didn't deduct, so June the services were suspended again and I called their Service Desk and told me that the debit order was canceled on their side but they don't know how, and then I asked on who's gonna pay the penalties for May Month as its noty fault as I was advised that I don't have to pay due to paying upfront. How can they cancel the debit order without my consent and I requested that they change my payment method to Pay it Through EFT via Branch. They then agreed and month end June I went to pay my installment in Branch,the very same month they debited me R1000, I then called again as their branch consultants always advise us to call their Credit line, so I called and questioned that R1000 which was debited ony account and they couldn't give me the right answer and they informed me on that the debit order was scheduled for that day of the Month and still they couldn't put me through to their seniors as this has been an ongoing matter for over 3 months in full where I've been paying it. As we speak I can't make use of the device as it's now suspended and I've borrowed the phone to lay this complain. I can't receive anything or make anything.Cant receive calls, Make calls and make use of the phone. It's now costing me to buy and spend as it's not on my budget as I'm using another simcard which I didn't plan to. I'm fed up with your service and need to cancel all the services as I can't use it.