Contract cancellation Nightmare.

After numerous attempts to cancel my data contract via email I was told I must do it via a call only. Eventually my contract was cancelled which I was sent an email (extra month notice even though various emails sent for a month before). My last payment due to Cell C was for the entire month of july even though they contract was cancelled 2 july. Also on top of this my bill was R450 per month it now went to R900 as they say it did not qualify for the normal monthly rate. I feel done in as I’ve been handed over to VVM who have tried to resolve this for me but aren’t coming right as no response from Cell C to them or me. Sent over 10 emails to Cell C. Some they acknowledge and some they don’t. But nobody comes back to me. Now I owe over R2k because of this vvm for fees and interest.