Vodacom Service and Cancellations Nightmare!!

Why is it always at least a 3 month exercise in follow up phone calls these days to get a subscription cancelled at Vodacom? After a shocking ordeal trying to cancel 2 expired data contracts to pay as you go last year which took me best part of 6 months, I called in October to cancel some bundles as I had migrated a contract and was advised to call back later in November to ensure the bundles were cancelled and were not billed for December . Well of course I was billed and they are on my latest account for December subscription . You spend 10 minutes punching in numbers etc and following prompts on the line and then you get cut off. When you do get through the person "escalates" it and then the same thing happens again next month - Its pathetic ! I am so over this ! Vodacom was never this bad !!