40.5% Premium Increase? Ridiculous!!!!!

I am utterly disappointed with Momentum Insure and actually do not recommend them to anyone especially my friends and family. I will even stop referring clients to them as they have been unable to win clients over due to their ridiculously overpriced policies. I keep wasting time referring clients only for Momentum to overcharge. Today they sent me my renewal schedule, and my policy premium has been increased by 40.5%, is this even considered ethical. You increased my premiums by just under 50%? Can somebody please explain to me why its considered fair practice to increase a client's premium by 50%? Ridiculous!!!