Cancel my subscription

I have decided not to continue with any AVG subscriptions, but it is impossible to actually find some way of doing this.  Please help.

Hi Sue,

We're sorry to know that you've decided to cancel the AVG subscription.  
Upon checking your account, we're unable to find any subscription. It might be registered under your alternate/old account.
As it isn't recommended to share the account info over this public post, we've sent you an email requesting it.
Please revert to us via email to proceed further.