Increased premium

I have been a loyal client of outsurance since my first car, infact, I moved from Miway to outsurance simply because of extremely poor service. I didn't regret my decision, so when I bought another car via trade in, I still stuck with them. They gave me a new quotation and even though it was almost double then the one I was paying for me previous car, I still stuck with them and accepted the new premium since I was driving a different car. To my very surprise, after only 2 months of payment the new adjusted premium, they send me an email stating that they will be yet again increasing my existing premium adding another + R400 only 2 months later!! Mind you, I have never claimed anything from outsurance for this period or even before that. Out of no where and no reason, they wake up and decided to increasing my premium within 2 months after accepting my 2nd quotation of the new car. How pathetic!!!!