Incorrect/Extra Billing and Bad service

I have been with Vodacom for more than 10 years. In the past I have received fairly good service from Vodacom. In the last couple of months I have had the worst service. A couple of months ago I received a call from Vodacom with regards to an upgrade on one of my lines. I explained to the agent that I only want a data plan. The agent had then said I will be getting a voucher as it is part of my contract and that they will deliver it. I told him that I don’t want it as I can’t afford any extra costs. The agent rep**** and said it comes with the contract and it’s free. The voucher was never used and thrown away. I noticed a charge on this line for R78.26 for a handset instalment fee. In July I contacted Vodacom to find out why I am being charged for a handset instalment fee as I only took a data plan. At the same time I gave my months’ notice to cancel one of my lines that was due for upgrade the following month. The agent I spoke to at the time advised me that the handset fee was in actual fact for a Voucher. I explained that I was told this is for free and that I didn’t want it in the first place. The agent advised that he would log a call on it. I also gave notice of cancellation on my other contract at the same time. At this point I felt some hope. I then received a sms on Wednesday 13 July at 08:34am saying that the handset instalment was removed and a credit was processed. I called Vodacom to confirm that the handset instalment was cancelled and that credit will be passed. The agent had confirmed that the handset instalment was cancelled and that the credit was being passed, I just need to wait 72 hours for it to reflect as the accounts department is working on the credit. I was happy with the reply. I also asked the agent to please also check that the cancellation of my other was being taken over to prepaid and the contract would be cancelled as requested. The agent said that there was nothing noted down of the cancellation and that she would make a request to cancel and convert to pre-paid but I would have to pay for another month. I was not happy with this at all as Vodacom was the one that messed up. I went on the Vodacom app and saw that my bill was credited as promised by the service provider. I made payment and thought that was the end of that. Well once again it was me on the phone to Vodacom. I received a message saying that the contract which was credited will be cancelled. I was confused as I did not request cancellation on this line. I called Vodacom and spoke to an agent, I explained everything. She advised me that there was a note to cancel this contract prematurely as per my request and that is the reason for the extra charge on my account. I was livid at this point. I told her that this is incorrect as no cancellation was requested. She said that she can see that it is a system error. She advised me not to worry as she will escalate and cancellation would be reversed as well as the extra charges. I received a sms from Vodacom saying that the line in question is now active and no cancellation would be done. I went onto the app to see if the extra charges were reversed but it was not. I called Vodacom again and spoke to an agent who advised that she can see that the credit was requested and that this is sitting with the accounts department process. I asked how long I need to wait for this to be corrected as I need to pay the account. The agent also advised to wait until 31/08/2022 to see credit. On the 31/08/2022 and the 01/09/2022 I went onto the app as I wanted to make payment and say that the credit wasn’t reversed, I also noticed that payment was now doubled. I called Vodacom again 03/09/2022 to query what was going on, on my account. I spoke to an agent that advised that the credit was still not done but she could see that it had been requested before. She advised that I would need to wait 72 hours for the credit to be done and the query to be resolved. As it being a Saturday I would need to wait until Wednesday to see credit done. I advised her that I am concerned as I need to make payment. She advised me to make payment but to subtract the credit amount from my bill and pay only that. I also went into the store and was advised that they actually can’t help. I must call the customer care line. The service is pathetic. I am not impressed at all with Vodacom I am now waiting for Vodacom to fix their mess once again. Honestly I am sick and tired of having to query my account and having to point out the mess they are creating. Vodacom finds it easy to take your money but not easy to credit the account after they mess up. The customer service is not up to standard and Vodacom could not give a dam about the customer who might I add we pay for the services that pay the salaries of the staff and day to day functions of their business. I used to think very highly of Vodacom and would recommend them to others. I will not recommend Vodacom ever again, but I will tell everyone I know to stay away from Vodacom as they are the worst.