bad customer service - deducting more money from my account than agreed to

Bad customers service experience from Vodacom The end of May I phone the cancellation call centre to cancel my data contract., the assistant then said why not upgrading to a laptop which I did and she also said that I can upgrade the other two hand sets as well , so I did. I asked her if there will be any other costs regarding the upgrade and she said NO. When she read me the T&C 's I stopped her and ask again if there is any handset fees and she said no. End of June my account went up from R1500 to R1944 so I called and I requested that the voice recording needs to be listened to because that wasn't the amount I agreed on. They said no they can't play me the conversation where I agreed on the contract, its only for their use and not mine. Then There was handsets fees added to my account end of July the same problem was noted on my account. I when to vodacom I lianga to log a complaint, but it still was not fixed end of Aug i phone the call centre and complaint again and ask for feedback, nobody came back to me I the got the regional office in nelspruit's number and and spoke to Jane - she told me that Solly will call me back - I am still waiting for him to get back to me. On the18/09/202 I spoke to Precious at the cancellation call centre, 10/08/2020i spoke to Vilikazi at the call centre then she handed the phone to her manager , he was going to log a call and they would come back to me with an answer . I am still waiting, how long do you have to wait for a complaint to be resolved ? The service at vodacom is not up to standard. I can't be paying for something I didn't agreed on. Now I need to pay extra hand set fees each month. The amount I agreed on for the package deal is not the same as the amount they are deducting from my account. I need to get this issue sorted out.