Auto and General Service Delivery

I recently logged a claim which was declined. I disputed the outcome because the assessors didn't check the items properly but gave a report based on the their experience and assumptions. The dispute was logged a weeks ago, and nobody from auto and General got back to me who would be the second assessor. A week later i received a call stating the outcome of my claim and again told I could log a dispute. I informed the lady that I had already logged one a week ago. I requested that my policy be canceled with them, to which she informed me that canceling would be at least a month or end of March to which I agreed. Later that day I received an saying the policy will lapse at midnight that day. The following day I received an sms from my bank stating my policy has been cancelled because of no premium payments. I find this unacceptable as I canceled because of service delivery not because of premium payments. I have proof my premiums were paid on time as agreed with auto and General. I find this fabrication of why I canceled my policy utterly disgusting.