Refund refusal

I am disappointed with Auto&Gen for refusing to refund my premium after I cancelled my car insurance. Their agent, Lorinda, has not responded to my emails. My car was fully paid and not financed, yet they are demanding proof of sale, even though I gave the car to my brother, who has arranged alternative insurance elsewhere. I feel I am being treated unfairly, as I am under no obligation to provide a reason when I choose to switch or cancel my car insurance.