Telkom deducts money for cancelled contracts

Telkom has deducted money from my account without my consent for i contract that i cancelled with the call center agent that was going to process the new contract for me. After waiting for 6mins to speak to an agent when i called in, they advised that due to the large call volumes their system currently isnt working and i should call back later.

So it is okay for Telkom to deduct money from my account (which is ***** because i never gave them consent) but when i need help to rectify the matter I have to wait and expect a call back within the next 24hour...

What about my money that i am short with?