Complaint: Unjustified Vodacom Debit

I am upset and frustrated with the recent debit on my account. I previously had four contracts with Vodacom and recently reduced this to three, as my son is now responsible for his own contract. Despite this change, my monthly invoice has remained around R2,900 – which made sense for the four contracts. However, to my shock, Vodacom debited R3,700.11 from my account this month - a massive and unexplained increase. I contacted your call centre for clarity, but no one has been able to provide a valid explanation or breakdown of this charge. And there is not even a reference number generated after being on a call for 45min!!! I would need to have a detailed breakdown of this amount and an immediate investigation into why I am being charged more now with fewer contracts!! Your customer service is pathetic to say the least.