Poor service and I'm being *****ed by Vodacom

I'm asking for help in contract cancellation Hellopeter. I had 2 cellphone contracts with Vodacom, it ended on 30th of March 2020. I called them on the 5th of February 2020 to cancel both contracts, and they were not cancelled. I kept on calling up until only 1 contract was cancelled around April. The other contract is still not cancelled. I've been calling them, I even went to vodaworld in Midrand in August thinking that I will get help still no one is willing to assist. I even asked to speak to their TM, and I was told that the TM will call me, but he just buzzed me and drop the call. When I call back I was told that all TMs have gone to a meeting, up until today no TM has called or tried to assist regarding to this query. I don't normally get reference for this query and I can't cancel the debit order from bank because I have other contracts with Vodacom and it comes as one instalment , so I'm still paying for it. Always when I call I'm being told that the query will be referred. When I ask why are they not cancelling it, I'm being told that the first person who assisted me the first time I called was suppose to cancel it, so if the person didn't cancel then they will not do her job.