Hassle of Contract Cancellation

I cancelled my contract with vodacom over the phone on their contracts cancellation number *** and before you speak to a consultant it tells you you’ll receive an immediate SMS and email to confirm cancellation. Then I spoke to the consultant and she repeated the same thing after I cancelled but I didn’t receive any immediate SMS or email I even asked her for a reference number and the consultant said there’s no reference number it’s been cancelled, yet they’ll still be debiting me even after I cancelled the contract. I have been calling for the past 9 days every single day trying to cancel my contract since the consultant I spoke to didnt, and now all of a sudden their line is so busy there’s no consultants available. Vodacom please stop being ******** and ******!!!! Just cancel my contract please I don’t want your services anymore!!!!