Now TV Added Without My Consent - I have been charged $15 extra for since December, 2025 - I would like to cancel and get a refund

I noticed additional $15 in my automatically paid bill going back to December, 2025. I was lucky I noticed it. XFinity, without my consent or awareness, had added "Now TV" which I don't even know what it is, to my service. There seems to be a pattern here as I am not the first person to have this issue. There are posts on Reddit and XFinity Forum of people being charged additional services without their consent. I would like to cancel this service and be refunded for every billing cycle that included the Now TV $15 charge.