Very disappointed and upset customer

I have never had such a bad experience in all my years of being with Vodacom as I have had in the last two months. I called in December 2019 to cancel my 20 gig wifi contract and noticed on the 3rd of January 2020 that more money than usual had been deducted from my account, I called in and was told that my contract was not canceled by the agent that assisted me in December 2019. When I called in on the 3rd of January I was given reference number *** which was closed as resolved. I called again on 19 January 2020 to confirm that I would not be charged and was told that I WILL be charged despite me canceling my contract in December 2019 and following up on the 3rd of January 2020. I am disgusted that this matter is still unresolved and I refuse to pay and will change my bank account so that no debit goes off. To add further insult to me I discovered that on the 19th January 2020 midnight while I was sleeping all my data which was 1139mb disappeared. I was not given a proper explanation as to why this happened and also want my data returned to me. My expectation is that I will not be charged the R1017 at the end of January 2020 and that I will be re reimbursed my 1139mb of data that disappeared from my phone during the night while I was connected to WIFI. Please treat this matter as urgent as I have been dealing with this for some time and no one is able to assist. If calls are recorded where is the call for my original cancellation and of the call on the 3rd January 2020 where I was promised I will not pay for January??????