Bad service for a year

Very bad service. Last year and still pending Cell C did not stop my contract after i paid a cancellation Fee and then deducted again a cancellation fee which resulted in R1800 that was incorrectly deducted from my account and i still did not get it. Now you ****** hell again to the same ****. Is the people not qualified. Deduction R1200 and my account is now in overdraft and have a negative impact on my credit record. I want to know who in full did this ****in deduction and why. I will block cell c from my bank account and give you phone back. Im sick of you running things like its a ****a shop