Well, it seems easy to subscribe to a product, HOWEVER, if you wish to cancel anything, you are made to make a phone call and sit On-hold, wasting time!
Highly recommend, NEVER set anything for auto subscription renewal! Situations change.
I haven't had a computer requiring any third party software. Should not be necessary to use the phone to cancel & get a refund for something.
If you can subscribe via a web page the same method should be available to reverse it.