Vodacom poor service

Hello I have been advised to contact you with a problem I have been having with vodacom south africa for several months. In December 2021 i took a contract with vodacom for and lTE wifi connection. It was a business promotion offer costing R499 per month and part of the offer was to have the contract for 12 months and not the 24 months which is standard for vodacom. I commenced with the service and in December 2022 advised them that I was giving one month notice not to renew the contract. This is where my problems started, they seem to have no record of this contract. When I phone they tell me I only have a cell phone and no internet contract, so who have I been paying R499 per month to. After having phoned them about 40 times since the beginning of December 22 to sort this nonsense out, I still get billed every month for this contract. I gave up phoning these people eventually, and started sending them e-,mails, they have contacted me twice and given reference numbers on two occasions but despite this I have yet to hear from them. I went to the vodacom shop where I took out the contract and after they spent two hours on the phone we were still not able get a satisfactory solution. I had the payments reversed by my Bank, and decided to pay my cellphone contract by EFT,and no longer paying for the wifi contract. Despite paying the cell phone regularly, they have now blocked my cell phone service. I am 77 years old and really do not need this kind of aggravation in my life. Could you please look into this for me, Here as follows is all my vodacom details. Vodacom account number I***-1. Vodacom invoice number VB/N609633 my last reference number from vodacom was 002BXaH2NGT82VYW my name is Dan Harvey Berriman and ID number is *** I hope these details will help, and certainly hope that you could resolve this issue. What I want now is to break off all contact with this provider, have my debit order cancelled, and all the moneys they just keep adding on removed. I will go to a company like MTN and hope that they are a little bit more competent. Thank you D Berriman