His premium was £1,920 and I can’t get Sainsbury’s Bank to cancel the policy

My dad FH passed away in July, and, since then, I have been trying to cancel his car insurance with Sainsbury’s Bank. I wrote to explain the situation, but it didn’t act on the letter or scan his interim death certificate.

When I managed to speak to someone, in mid-September, it promised to cancel the policy and contact the underwriter to see if a refund could be backdated. But, instead of cancelling, I received a new one with his name amended to include “executor of” in the middle.