Disappointed with Lack of Response from 1st for Women

I emailed 1st for Women on the 24th of November to cancel my car insurance because I can no longer afford the new premium. It’s been six days, and I haven’t received any feedback or confirmation of my cancellation. Despite this, they still went ahead and debited the November premium from my account. This is unacceptable, I clearly stated my intention to cancel before the debit date. I now expect a full refund of the November premium and written confirmation that my policy has been cancelled. Communication and customer service should be much faster, especially when it comes to financial matters.