Over debited on Extended warranty

In 2014 I financed my car through ABSA and i was offered an extended warranty by ABSA insurance. According to the policy documents, I was only supposed to pay the premium for 24 months starting from June/July 2014, to date the money is still being debited and when I called ABSA I am being told the policy is from a third party Innovation Group. Why must I now go back and forth with Innovation Group when i took out the policy with ABSA and im being debited by ABSA with my car payment. They are deceiving people offering them products that are not undertaken by them. Now im struggling to get Innovation group to stop the debit and refund me for the 16 months that I have been over debited,