Very dissapointing service

After cancelling my insurance with Santam, I requested a tax certificate, which I received from Mr Irvin Fritz. I noticed that my premiums increased every month, even though I do not recall changing anything on my policy. It started off with R538, and I ended up paying R837. My broker has been trying since then to find out why, but no one at Santam can explain this. They also double debited my account with almost R8k after the policy was cancelled? It seems like because I am not a client anymore, that no one wants to assist. Hopefully I will get some response from this complaint, as my next step will be to lodge a case with the Ombud.