AVG Subscription Cancellation

Unable to unsubscribe via website. Phone number is not connecting.
I would like to cancel my subscription and not get charged.

I have closed my checking account. My next subscription through Google will not work.

It seems impossible,I wasted 2 frustrating hours on this ,got it done by telephone on 0800 031 8397 a girl with US accent eventually answered,She was in the Phillipines!