Cancelling my Policy because I changed Banks!!!

So I changed banks just before my debit order went off and requested that Alexander Forbes change my debit order details as well as do a forced debit for the premium as I placed a stop order on the old account to prevent unpaid fees which is incredibly high!!! To my surprise I received a phone call from Alexander Forbes saying that they can't re-issue my policy due to the fact that I placed a stop order on my account for the debit order, it's against their policy (can't remember seeing anything to that effect in my contract) as well as due to some claims I had over the last 2 years (last claim over a year ago) which I've already seen an increase in premium for as well as increase in excess. Why didn't you cancel it a year ago??? Please forward both voice recordings for the calls today as I want to refer the matter to the insurance ombudsman!!!