Horrible Experience with the contract departmen

I had a data contract which I took years ago. Somewhere betwn Mar & Apr data stopped working. Sales agent contacted me to sell another contract somewher around 18th Apr to which I agreed to get second data contract and also raised the issue I had with the current contract. He then said that he's going to order me another 4G sim to resolve the issue I had, in addition to the new contract I took. Was supposed to receive the sim cards the following week but the courier sent my parcel to Limpopo while am in GP, that was the first frustration frustration. While I was waiting for the mix-up to be resolved. Another sales agent called attempting to sell another contract and I told him that I'm still waiting for my parcel to which he responded that I won't receive it and that he's going to order another one. This while I continue to receive messages from Courier-IT stating that I should be home so that they deliver and being dishonest that they tried to contact me. Fast forward I do not receive the delivery the send agent ordered and follow-up and get told that the reason why I did not receive the first package its because it was declined due to pending documents from my side, which didn't make sense cos the 1st agent did not say anything to about emailing docs. I keep following I get told different stories by CellC agents. Fast forward I receive the package but its only 1 sim card for the new contract I took out. I follow up on the issue I have with current contract, that time the DATA HAS ACUMULATED TO 40GIG COS I HAVE NOT BEEN ABLE TO USE IT FOR OVER 2 MONTHS. Then another lady I spoke to last week decides to order me another sim card and after we have concluded the call I receive an SMS saying telling me I have migrated, did not make anything of it because am not fami**** with CellC processes. After receiving the new Sim I contacted CellC on 26th April because I did not know what to do, at some point I was told that the Sim is for Sim Swap for current contract. I spoke to another lady who also did not give me confidence that my issue will be resolved. After doing all the checks she then told me that we have to do a sim swap which was completed the following day. I then see that there's about 700mb data in the new sim card, I then gave it a few days thinking that the other data will be transferred into the new sim, but that did not happen. On Tuesday after I call I then get the shock that I migrated to the 3gig data. After probing why and how I was migrated the agent fails to answer my questions and decides that she is going to log a query/complaint. I do not remember remember agreeing to migrate and forfeit the data paid for with my hard earned money. Then yesterday 1st June, I receive an SMS saying they tried calling me. I call them back only to speak to another person was also not willing to resolve my issues, she kept on emphasizing that I migrated to the 3gig data. When I thought we were going somewhere with the conversation she then tells me that she can request that I be migrated back to the previous package but I will not receive the data 40gig data that they wiped out nor a refund. She couldn't even give me the details for me to escalate my concerns internally with CellC. I have given Cell C many chances to turn around the bad experience I had with them but no, it gets worse with every interaction. I want CellC to get me back to contract I had with them and want my 40gig data, I paid for it