Premium Rate Ridiculous

I have been with Outsurance since 2006, I have moved from a Opel Corsa, to Toyota Yaris, to eventually a Nissan Juke in 2013, all brand new. I realise when I originally joined I was part of a high risk portfolio, but I am now at 33yrs old, only claimed once in 2014 due to negligence for minor sc*****, but my rates have gone up and up and up, and now in September 2015, I will be paying almost R 1100 per month. I am very disatisfied about this and after discussion with a senior consultant I have had to increase my excess to over R 3820 to only get a R 74 difference in premium. Due to this I am going to shop around for another insurer because I cannot afford to pay these premiums anymore and no advisory or actuaries have even considered looking at my portfolio or asess.