Vodacom *****ing money

I've canceled my vodacom vibre after 3 months without installation happening. I payd R599 after i got my cancelation letter from vodacom on the 22nd of February saying that the contract is canceled. Today another R599 went of and vodacom stating that i never canceled. But my wifi was switched of on the 22nd and no data came through. I want this to be noted vodacom steeling my money and now acting innocent. I tried phoning thier customer service and the lady dropped the phone in my ear after i requested a recording of the phone call

SR***