Refuse to cancel policy

I made a claim to standard bank insurance in January 2015 after having a wall problem , my claim was rejected by them I then decided to join another insurance in April and cancel their insurance. <br> <br> After some time they requested all documents with regards to my new policy so that they can cancel their site but it has only been a promise nothing happens. <br> <br> In September I received a statement showing they are still taking money for that policy, upon my enquiries I was told they shall look into the matter and come back to me, a day after they renew the policy .<br> <br> I called seeking clarity I was told the matter has been elevated to high level. <br> <br> Now I received a communication offering me a new premium but conditions still the same.<br> <br> Please assist me to get my money and cancel this policy since they have failed me in the past