How do I cancel HBO GO?
HBO GO is a free streaming service that's included with your paid HBO subscription through a TV provider. To cancel your HBO subscription, you need to contact your TV provider
The name of your TV provider appears in the upper-right corner of HBO GO when you're signed in on your TV or at HBOGO.com, and also in Settings on your phone or tablet.
How do I cancel my free trial before it ends?
HBO GO is not available as a free trial. If you have a free trial, you might have HBO NOW instead of HBO GO. For more info, go to How do I cancel my HBO NOW subscription?