12 months later NO REFUND!!!!!

I cancelled my car warranty and service plan policy with innovation group September 2016. They informed me they would still debit October 2016 due to my cancellation being less than 21 working days. I agreed. They however continued to debit even in November 2016. I called them immediately after my debit and they said my refunds will be in my account within 30 working days. I have called EVERY month since then as I have NOT recieved my refund and everytime Im told accounts is awaiting to approve or process it. Im tired of begging for MY money. Terrible service! Do not use this terrible company!!!!!!!