Forced maintenance plan with hight interest

I have never seen arrogant bullies like VW finance consultants. In August i was called by VW finance team selling me a maintenance plan for my Vw polo. I accepted the maintenance plan which started in September 2023. On the 17th of November i cancelled the plan. They charged me few interest for cancellation but all was good. All of a sudden on the 21st of December they reinstated the plan with the interest of R9000 without my consent. Since then i have been calling begging them to remove this plan as I did not agree/approved to have it reinsated. To date they did not remove it. I even spoke to one of their managers that promsed to fix this but clearly she just **** to my face. Now my only option is to sell my car so that i can terminate my contract with them. For this they have cheated me by charging me R29000 for the maintenance plan i did not want/ use plus R9000 for interest. Please stay away from VW Finance. I regret financing my car through them.