OUTsurance unauthorised debit

Getting a comparable quote from Outsurance was the worst mistake I have ever made. Within 30 secs I had Moses on the phone who proceeded to get the information from me (for about an hour) to give me a quote to compare with my existing policy with Momentum. I did accept the quote but cancelled it within 2 or 3 days - within the cooling off period . Since then, despite Outsurance cancellation assurances and delaying the start date I have cancelled it telephonically for the last 4 months. They debited my account on 1 March. I reversed the payment and will not renew it. There's no where on their portal to cancel the policy. I have tried. I was assured this year it would not be deducted but they would check before 1 March. They did not contact me. I am a pensioner - almost 80 years old and it was their aggressive sales manner that is why I cancelled it and renewed my Momentum policy. I'm really distraught about all this. And I want an email confirming cancellation as I have previously requested.