stuck in the middle of remote pairing

I had to unpair and re-pair my remote this morning - as I have to do every month or so - and I'm stuck on the "Do you want to keep using Voice Guidance?" screen. I select "no", the three dots appear on the screen for a minute, then the voice guidance question comes up again. I can't exit out of this screen or turn the TV/box off, and resetting the box has no effect; it brings me back to the voice guidance question. Neither the TV, box, or remote are new; I've had them for over a year. Xfinity Assistant says I need a new remote, but I'd like a second opinion!