Disappointed Momentum Short-Term Insurance client after vehicle insurance premium raised by nearly 50%

I have been insured with Momentum Short-Term Insurance for the past 3 years on my vehicle. Last year I was involved in a motor vehicle accident for this first time on my policy. The cost of the accident was far less than the premiums I had paid over the last few years however last month I was informed my vehicle insurance premium would be increased by 50%! I called the retention's department to ask them if they can review this increase as I felt it was extremely high considering I had been a loyal client for the past few years and I explained that I would like to stay on as a customer but they were very unwilling to compromise on this. It’s disappointing to know that Momentum Short-Term Insurance does not value their clients and would be prepared to let them go without trying to retain them. I am still willing to give Momentum Short-Term Insurance a chance but if they not willing to re-evaluate my policy I will be left with no alternative but to find a new insurer for my vehicle.