Bank Details 'Changed' - But not

I went through a process recently to get the bank details changed for my account from my personal to business account. I was quite happy that this seemed to take relatively short considering my previous experience with Vodacom. I sent all the required documents through and received an sms on 30 Aug "Good day, bank details updated as per request. Kind regards. Vodacom Customer Care " - excellent I thought.

1.5 months later, I am still getting debited from my personal account and clearly the effort to change my bank details is null and void. I try to call customer care, on a number of occasions, but after 10 minutes of waiting today, I decide to write this on hellopeter.

Why is it so difficult to get good customer care with Vodacom?