Making Cancellation Impossible - Customer for Almost 6 Years

Requested a cancellation on 3 different occasions starting early February 2022. On the third cancellation attempt, the agent confirmed that my subscription was cancelled and that they would not deduct the monthly subscription fee going forward. A few days later I received an Electronic Mail stating that because their retentions department could not get hold of me, they will not be processing the cancellation. As the account holder, I have made it very clear to them telephonically to cancel the subscription, I also made it clear that I am not interested in speaking to their retentions department as my decision is final. Cancel the subscription.