Contract cancellation with Vodacom is IMPOSSIBLE!!!

Earlier this year it took me 3 months to cancel my a contract which I have had for 22 years. Fast forward to 27/11/2019 - I called in to cancel a 3G I've also had for many years but don't need anymore. Kulewa agreed to cancel and told me about a wonderful deal on my 5gig that was due to for upgrade in January. I declined as I have fibre at home and wifi at work. 2 days later I was called by an upgrade consultant, only to find out that not only was the 3G not cancelled, the 5gig was upgraded without my consent. Took another 3 calls to finally confirm that what I had wanted was actually done and the unwanted 5gig upgrade cancelled. This morning I called to cancel a another contract, but as soon as I indicated that I wanted to cancel a contract, the line was disconnected. This happened 3 times!