Cancellation of Insurance

I have a household and car insurance with Hollard since Oct 2021. In April this year I was involved in an attempted hijacking. My vehicle was shot at and damaged. Hollard payed me out for the damages, as the service provider could not repair my vehicle within the time. On the 1 Sept, I received an email via my broker to say that Hollard is giving me 30 cancellation on my policy. The reason for the cancellation was due to the fact that my claim was higher than the amount that i have paid in premiums. This is such a ****py excuse to cancel a policy. What about things like access, raising the premiums amount, me not claiming for the next how ever long????? Mind you during all of this Hollard has not made contact with me once. Everything is getting done via a broker. I want someone from Hollard to call me back so that i get a proper explanation of why my insurance is being cancelled without any feedback or communication from their side!!!!!!!!!!!!!