Discovery Insure - Yet again appalling service

I cancelled my policy with Discovery Insure due to its pathetic service. 3 months later, they take debit my account again without any notification. When I call them, they say it was due to the tracking devices still in the 2 vehicles. One was removed by them on the 4th of October and the 2nd car is in their possession as it was a car they wrote off. I held on for more that 25 minutes for them to get their necessary confirmations. Such bad service yet again. They should honestly stay in their lane for medical aids as they dont know what they are doing when it comes to short-term insurance. They take money out of my account without letting me know and its their mistake and now I have to wait for 7-10 days before they give it back. Who is going to cover the costs of my rejected debit orders due to them taking this money out of my account?