Promise not delivered on service plan

Initially when I purchased my vehicle I was contacted for a service plan. Never was it mentioned on the phone call or in the terms and conditions that the inception date was first registration. The plan was sold to me as a 84 month service plan. After E-mails back and forth between myself and the Innovation group it was still not proven to me that the inception date was clarified (still awaiting voice recording as promised on . I decided to cancel as I was tired of fighting and being sent from pillar to post. I was informed that my account will credited with the difference between what I paid and what I claimed. I was still not satisfied but did not have the patience to deal with them anymore. Now since struggling in January still not resolved as the credit was never app****, neither was my installment changed. Here is what I have done with no resolve from their side: Lodged query on 05/01/2016 spoke to Sannah. Spoke to Lungile on 07/01/2016 & lodged a formal complaint Ref: GWH 91241, Follwed up on 13/01/2016, 14/01/2016 & 15/01/2016. No feedback received at all, cancelled on 02/02/2016. STILL NO FEEDBACK! What must be done in order to resolve!!!