Deducting money while NOT having a account

Did an online application for a fibre installation on the 1st January 2018 and paid R1099, no installation was done, cancellation was sent on 20 February due to non-delivery to ********** 09:24 - no acknowledge send on this mail and one cannot contact the accounts department. After numerous phone calls a confirmation was eventually sent from ********** on 01st March 2018 08:50 stating that I do not have any account with CellC. On the 24th October CellC took a further R1109 from my credit card stating that I have a contract with them from 29 August 2018. Told them that there bookkeeping is not on par as no-one came and installed the fibre, requested escalations ref: ********** 065 and ********** 082 but was closed WITHOUT ANY FEEDBACK. Asked for a copy of the alleged contract that was signed for on 29 August but till date, NO contract was provided this organisation are taking money *******ly out of my account and are refusing to pay my money back siting "as per the system" excuses.