Contract cancellation

I had a contract with Vodacom and I called the retentions department since my contract ended in August and I was told it’s too late to cancel my contract and they added a WhatsApp ticket bundle for it to be on prepaid , they said it’s a once off bundle but it wasn’t , so I told them I want everything cancelled and then a guy by the name of Bryan was very rude age started screaming at me , he thinks he can talk to anyone anyhow and disrespect them ! This is absolute bull**** ! How can you guys hire such pathetic rude employees? Maybe his mother didn’t teach him any respect! I then called back and spoke to someone to get my contract cancelled and I was told to hold on the line and then they hung up on me and that Bryan guy called back questioning me why I’m calling . First of all he was absolutely rude , was no help and just for him to make his daily target so he can get commission he decided to lie and say that he has to add this bundle … I called and spoke to another lady who then said it’s once off but guess what … it’s still getting debited of my bank account! I would never recommend anyone to Vodacom , they are full of **** and I want this to be sorted out immediately