Poor Cell C service

I have cancelled 2 of my contracts which had expired in April 2018. The reason for the cancellation was the poor network in our area, we wanted to move the specific numbers over to Vodacom. End of May Cell C had still deducting a premium after my month of cancellation. I had phone them and according to Cell C my contracts was still active, after explaining myself, they adviced that they will listen to the voice recording in April and phone me back. One of Cellphones screens was damage and I was in urgent need for an upgrade, but Cell C don't cancell the contracts as requested. End of June Cell C still deducting money from my account. I phone them again yesterday.... again the promise to sort this out for me, without any luck.

I'm so fed up.....They don't phone me back, my accounts are still active with them, my cellphone is damage and I can not upgrade cause Cell C is not doing their wor****