Premium Increases without reason

I had cover with King Price since 2020 for my car. A year later, after not having any incident for the last year, I called King Price upon my annual review to enquire if my premium would decrease. I spent close to an hour with the consultant of which resulted in my premium decreasing with about R200. Cool. Two days later I get an email that my Premium would be increasing to R3500 pm (previously it was R2400). To my surprise, I give them a call a few days later thinking it is a mistake. Only for them to confirm. So,now no one is able to explain exactly what is going on. No one is able to answer the simple question of why premium has increased by R1000 despite me not having a previous incident, no change in address with a depreciating vehicle. Anyway, I managed to get cover of more than half that elsewhere.