Disgusting service

When I upgraded last week Tuesday, the guy who helped me said that he recommends that I have to take insurance on my new phone, and he gave me the price, and I said it's fine he can put the insurance on my phone!! Later that day I saw on my vodacom app that the insurance is on my bill and it shows double on my bill and much more of the price he gave me!! 2 days later I got back to him in the shop and asked him if he can sort it out, then he asked me to come back later because someone else showed up to see him!! Then I got back to him and he called Vodacom customer care and the guy of Vodacom customer care said that I have to email him a screenshot of the double bill on my account, the next day I didn't hear anything from the guy of Vodacom customer care and I called the guy who helped me with my upgrade and my insurance, and he said that I have to call customer care to sort it out and if I fail with it he will call them, the Saturday I called him back and he said he will call them Monday to sort it out. Monday I didn't hear anything and didn't see anything on my Vodacom app, I called him 2 times and each time he hang up on me, so I called him the Tuesday back and he hanged up on me again, after that, I send him a message and told him that I'm going to report him of his bad service and that I'm going to talk to his manager, few minutes later a guy from Vodacom customer care called me and said that the guy from Vodacom shop called him to call me and sort something out, and still after that the problem isn't solved!! A few minutes later the guy of the Vodacom shop accidentally call me and he only said sorry he wanted to call someone else, then I said to him that it look likes he don't wanna help me, and his response was sorry he was on the road but he will sort the problem out as soon as possible. A day later the problem isn't solved and I still didn't hear anything!! All the years I was happy with Vodacom but now I wish I can cancel my contract!!