Optimum/Avis/Barloworld motorplan...stear clear

I took out a motorplan when i purchased a vehicle from Avis Luxury cars which I cancelled on March 18 2020. It is now May 18 (2 months) and i still dont have the refund. I have called, emailed and messaged at least 20 times. Each business unit i interact with points me to another. The vehicle was bought from Avis luxury vehicles. The record of transaction is with Vistasure. The representative is with Avis. The intermediary is Barloworld Motor Retail. The maintenance plan is with Optimum.