Cell C **** Contracts on my Invoice

On 10th June I reported additional charges on my Fibre invoice dating back to 2018! Apparently I have two additional contacts I NEVER took out! Despite submitting Affidavits, Bank Statements etc I have had NO feedback from the ***** department and the call centre apparently have no record of the complaint. Conveniently the initial charges were reversed for the first year of the contract but then charged and not reverses. Not a huge amount so has not been obvious on monthly debit orders. Fed up and furious that in 2 weeks nothing has been done.