Taking advantage of clients

I am so disappointed with the service I am getting from discovery insure, year on year at increase stage you guys are an absolute nightmare to deal with firstly when we try to review our policy before we get debited the higher premium I get told you guys can only make changes after the date of anniversary forcing us to pay the higher rate whether we can afford it or not - I have paid you guys a premium of roughlyR1500 for the last 3 years yes roughly R54000 during this time I claimed once this year for R6700 - you guys took my premium from R1470 roughly to R1700 roughly, generally when a client has a good claims and payment record premiums should decrease over the years I have been very patient with you guys and allowed you to help in keeping my rates the very same now I am not going to keep taking this you guys are taking advantage of me as your client and please don't come to me with all this driving points nonsense I don't have time to get your 100 assessments done I need to speak to a manager because year on year this is continuing and I am now fedup, please contact me on ASAP because I am tired of getting no joy from you guys