Horrible service

I have sent a request for my policy to be cancelled in June in Writing and this was not done. Then i received a call from a consultant who then said she would be cancelling my insurance on the 28th of July and still this was not done. I called yesterday and spoke to an Afrikaans speaking lady who also informed me that she will cancel the policy and send confirmation that his was done and refund my premiums but yet again this is not done, The service of this company is horrible. I sent this in writing I don't get why I need to be contacted for a request that I have sent directly to the company.