Hollard refusing to cancel my policy

I have been attempting to cancel a policy for my vehicle and household contents since the 28 June 2022 since the vehicle and contents were sold. I am an 84 year old deaf man who no longer drives a vehicle so have no option but to correspond with them via an email address I have set up. After receiving a generic response promising within 2 days it would be resolved it has not. The complaints line advises they can't trace the policy without the brokers details however there was no broker. I emailed on the 28 June, 7 July, 23 July, 29th July, 6th August and then the 8th August. The last email response received stated they can't cancel it without the broker info (there is no broker) They are legally obliged to allow a customer to cancel a policy however they refuse to follow my instructions even though I have provided a copy of my ID, a form completed to cancel the policy and the policy number which is reflected on the debit order being debited monthly on the 1st. Be careful of ever signing up with Hollard as you may never be able to cancel a policy.