Have you tried to cancel a Vodacom Contract?

I’m trying to cancel a contract from the 7th of February. First, I was asked to phone Mondo which ensured me that my contract will be cancelled in the next 7 to 14 working days and the items collected. When again I phoned on the 2nd of March, I was told to phone Vodacom Customer Care which kept on transferring me from one department to the other to “help” me. In the meantime, my debit order went off again and as on this day my contract still has not been cancelled. When I phoned again today to ask for the recordings, I was bluntly told that I cannot have them and needed to go to my nearest Vodacom shop which in my case is a good 2 hours’ drive and that an investigation first needed to be done. It feels as if I will get nowhere with this cancellation. Anyone experienced the same issue and perhaps can point me into the correct direction? Can I stop my debit order?