Vodacom poor query handling process

Hi, last year in October 2020 I activated promotional data on my Vodacom app and which then canceled out the 5gig promotional data that was already running on my contract. I then logged a call to complain that the details regarding my data being canceled were not appropriately clarified. Vodacom resolved my query by saying that I can not have 2 promotional data running at the same time, and they canceled the 10gig that I had just activated and restored the 5 gig promotion that I initially It took quite a while with back and forth conversation to get us this point but now on the Month of October my bill went up again and I just assumed that this was because of the contract that I added. Yesterday 2021 I looked at my statement only to find that the insurance was never really added. and the reason for the increase on my bill was because of new promotional data that was added, which according to Vodacom it was added by myself using the user code. My question is why would I fight so much to get this subscription canceled and then go the very next month and re-activate it? to make the matters worse this time around the promotional data that I supposedly added did not cancel my existing promotional data. This is after Vodacom made it clear to me that one can not have 2 promotional data ruining at once. I called Vodacom requesting that they reimburse me for all those months that they have been charging me for this promotional data that I never even activated. Vodacom texted me a resolution stating that they can not credit me as this was activated through a user code. and that they can not remove it cause my account is in arrears. None of this makes sense cause I never activated this 10gig promotional dat and if I did I would know2ndly one moment I am told promotional data cancel out each other but this not even the case this time around. The back office did not even call me for an explanation and to hear my side of the story. and as it turns out I can't even call them myself and the Vodacom contact agent also claims they can not transfer calls to them. I want definite proof that I am the one who activated this promotional data with all the logs, showing the time and date. I am currently complaining about being billed for something I never activated and the response is that you can not cancel it while the account is in arrears. the account would have never been in areas if I was not billed for things I do not know in the first place. Vodacom ref: *** Vodacom sent me a message with the resolution stating that they are restoring my data to its original state of 10 gig anytime and 5 gig night which they did but then later reactivated the 10 gig without canceling the original data I was getting and now they claim I did it over some ussd . I have a Vodacom app from which I do all my purchases from I don't see why I would by an ongoing deal like this over some ussd code.