Unfair charge

My plan lapsed due to late payment, but that was my fault and no complaint. I then reactivated my plan for Car and Home Insurance, but a few days later I decided to sell my car and phoned Discovery Insure to cancel the Car Insurance and to adjust the first date of activation for my new Home Insurance policy to be on 27 January 2025. My premium was deducted, but also a R195 fee for activating the telematic service for my car...which I sold and the policy for which I canceled. I spoke to an agent who seems to not understand that I never actually had car cover ever since my plan lapsed, but somehow he thinks I should still pay for the activation of telematic service on my car, even though I never even went to install the telematic device. I want a refund of the R195, as I cancelled my car cover and never even paid a premium for cover.