Subscribe & unsubscribe

I went into my account and changed my email address.  I have now received an email from AVG telling me that I have unsubscribed.  I did not do this!!  Where can I let AVG know that an error has been made and that I wish to continue with my subscription as I want to be reminded when it expires.

Hello Karen,

We have sent an email and explained the status of your AVG subscription.
Please revert to our email for further assistance.
Thank you.

Hello Karen,

We have sent an email and explained the status of your AVG subscription.
Please revert to our email for further assistance.
Thank you.