Unacceptable Premium Increase

I initially had insured my dog through Petsure and had no option but to go with the move when Dotsure acquired Petsure. At this stage my dog was about 12. Unfortunately last year she was very ill with pancreas problems and I had to claim on the policy, I have to say that Dotsure were very efficient in processing and refunding my claims. Unfortunately I have just received notification that my premium will increase from R333 a month to R464....an unheard of 30% almost......and the explanation from Dotsure was that my dog is over 9 years old and premiums for any pet over 9 years old increase dramatically. What a load of *******, my cats are insured through another company who have not done this and 2 of my cats are over 14. My view of this: the policy has been increased due to the high claims I put through last year, it has NOTHING to do with the fact that my dog is 14. Shame on you for this unacceptable increase and laughable explanation, if my dog was young enough Id move her to your opposition but you've got me between a rock and a hard place, at least be honest with your customers.