how do I cancel Acorn TV subscription-- this is not a hard question

Go to Services, select Manage TV. On the right you will see an option to Add/Manage Premium channels. This will take you to a screen where you will see all the included channels and the optional ones. If you have subscribed to Acorn then you will see that it is checked. Uncheck this and then select Review at top of the screen. Then will take you to a screen where you will accept the change. Once you accept the change Acorn should be gone. Be aware then when you make this change Xfinity will immediate reset your set top box (at no charge!). 

Good luck

-John

Absolutely worthless advice.  I've spent hours trying to cancel Acorn, but no luck.   Infinty chat is not help at all..  I am so angry, I'm beside myself.

Note: this works on the xfinity app, not the website. Waste of time trying to do it on the web.

This works neither on the web nor on the Xfinity app. Clicking Add/Manage Premium Channels just gets redirected from one URL to another and eventually shows an error page saying, "We're sorry. It looks like you'll need some help completing your order."

This has been broken for who knows how many months. There is other broken functionality on the web site, too. Looks like there is not much regression testing of the web site. Adding new features to the web site or app is probably breaking older ones.

The only way to cancel is to call them - 1-800-COMCAST