Bad service

On the 25th of July I claimed R250 from my policy, on the 31st I received an SMS stating that the claim couldn't be validated and that I needed to present proof of purchase. I got the required documents from the vet and sent then to the insurance. I received no reply, but an automated SMS telling me to pay R300 into there account, so I sent the invoices again. I have done this every Monday since and I have sent 2 emails to the complaints department about this and I have not received a single reply. On the 29th of August I received a SMS saying that a debit order of R440! Would be done on the 31st. So I sent an email to the cancellations department on Saturday to cancel the policy given the bad service and to this day I have not received a reply, despite the promise to reply within 24 hours. On the 31st I called the customer care and the man told me that there was no outstanding amounts and that it was an error on the account. Yet I have still not received anything from any of the emails or a call on cancelling my policy. I have had such good service up until now. I am very disappointed and angry.