Poor cancelation services

I have been trying to give my one month's notice to Vodacom since 4/11/20 spoke to Nkuleko who was no help wasted 20 min of my time trying to upgrade me instead of dealing with my cancelation and just transfers me to a rate the service option to which I rate 0 called again on the 5/11/20 spoke to Murwah who then says the same and call got cut to which I had to call back spoke to Shevon who got Murwah to call me back then when he did call back to get told that he sent n email to Nkuleko because he was the 1st agent to deal with me and I will get a ref number stil on not receiving a red number I called through to Kenan who then says that he spoke to Murwah n email was sent again to Nkuleko who is obviously not doing his Job and at this point I actually have a personal hatred for Vodacom only to call today 6/11/20 to speak to sutefelo who one again fails to listen to the client who clearly wants to have absolutely nothing to do with vodacom and tries to upgrade me when I pressed the option to go through to cancelation only to get told that he had sent n email to escalate my query which I highly doubt is being done.