VAPS Insurance Underwriters not forthcoming with a policy refund

I have cancelled my insurance with this company. I have been trying to get my pro rata premium refund without any success. Queries go unanswered. It has been almost 2 months now. Surely it cannot be that difficult to load a client refund on a computer system. Why should I ask for my refund? It is common sense that if a policy gets cancelled / changed and a refund is due to a client, that it needs to be processed the same time as the policy change. They are very quick to take your money but when it comes to refunds, well it doesn't seem to happen.