No response since 15 Sept 2015

I lodged a complaint with regards to the enormous premium increase after I claimed for an accident. I was told that I did not declare all claims, which was not true. I got a claims letter from my previous insurance to proof that I did disclose all claims and forwarded it to Crystal who was dealing with my complaint. I forwarded it to her on the 15th of September, got no reply, sent an email again on the 1st of October asking for feedback, to which I again did not receive any reply. My premium was increased with almost 34% for supposed non-disclosure which I proofed was not true, but still my premium was increased with this ludicrous amount and no replies are sent. This is the worst service I have ever received by an insurance company.