hehe I sympathise with the problem.
My insurance company was still taking premiums from my account for a flat I left two years ago. When I complained, they asked me to prove that I didn't live there anymore.
I tried to explain the philosophical difficulty this represented when I didn't know the new tenants, landlord etc but they still insisted.
The guy only relented when I asked what I needed to prove that I didn't live there. He was at a loss to provide an answer. I got my refund the following week