Vodacom misleading and ********* online sales

My experience is that Vodacom online sales and their complaints area service their clients firstly by deception and then by ignoring them. The services I agreed to are not what I am being billed for - my invoice is double the expected amount. I actually informed the person that I don't want to "upgrade" but "downgrade" as my circumstances changed. I lodged a complaint and was informed an answer would be forthcoming in two business day. Nothing since then (more than 3 weeks). My next invoice is still based on the incorrect services that I am not even using! I requested a copy of the recording of the discussion. Also nothing. And nothing they can do now will convince me to use their services in the future. After more than 20 years with Vodacom I will not use their services again after expiry of the contracts. I now have an invoice that is 50% more expensive than what I had before. A data contract that I did not want nor need as I have fibre, but that costs me more than double my previous one. A phone contract that is simply a renewal of my previous one when I selected a cheaper one.