Poor customer service

Finrite has charged me for inurance I do not have with them. In my first phone call they admitted that an 8 had been entered as a 0 in the phone number asnd so my number was linked erroneoulsy. NOw over a month later and many many hours on the phone to call centre agents I cannot get a refund. Vodacom is complicit in this as they collect the money and they say they cannot help me.