Poor customer experience 😢

I called in to cancel my car insurance in early August and this was not done. I have been debited on the 1st September. When I call in today to cancel again they refuse to fully refund. The first two agents I spoke with, I explained that I won't have the car, so I don't need the car insurance. I called a number provided on my policy however I was transferred from Pillar to Post been on a call for 19 minutes, at some point I was transferred to budget insurance. Such incompetence. The last agent who eventually canceled made it difficult too, to cancel.