That was why I asked, I wondered if this line meant if you called and asked for a refund they would give one.
"Should you wish to discuss your booking, please call our Customer Contact Centre who would be happy to help."
I'm afraid nobody here has that information. The simplest thing to do is to leave the Hotel and Dining Charge in place then there's nothing to think about.
I don't find Cunard food drab but I don't eat in the buffets or eat Vindaloo so we have very different tastes.
I hope you enjoy your future cruises on your preferred line.