Billed 6 months after cancellation

I requested cancellation of my account in April but was still billed until October. The last email correspondence I received in April confirmed that the cancellation was in progress and the live chat agents are unable or unwilling to assist me, in fact, they will try and end the chat when I'm halfway through typing my reply because they haven't received a response for 23 seconds.

The last person I spoke to gave me the escalation email address but the live chat doesn't allow you to copy the text so I tried typing it manually, but by this time the agent closed the chat and our conversation was removed from my screen.