Just realized I'm still getting billed for AVG on an old PC

Hello Chris,
You've reached the AVG community support forum.
We will certainly look into this and help you. As it is not recommended to discuss your order/subscription details over this public post. Hence, we've sent you an email to your registered email address. Please check for the email and revert to us.

Thank you for your understanding. 

I no longer use the PC or AVG and I noticed I am up for autorenewal in October. I would like to cancel this service, however none of my subscriptions show up. And since this was a purchase and renewal from a long time ago I tried all of my emails and none of them show as registered. Please advise.

Hello Chris,
You've reached the AVG community support forum.
We will certainly look into this and help you. As it is not recommended to discuss your order/subscription details over this public post. Hence, we've sent you an email to your registered email address. Please check for the email and revert to us.

Thank you for your understanding.