I'll be a staying guest for Westin Rusutsu in a few weeks. I emailed the hotel to ask them to help me book a lunch at a Japanese restaurant that's not part of the hotel. I didn't want to call the restaurant myself since I don't speak Japanese and they only accept telephone bookings (and I'm not in Japan). The hotel refused saying: "Due to hotel responsibility issue , Reservation Center is not able to make a restaurant reservation outside of Hotel. I am sorry for this inconvenience."

I have never had any hotels refuse to make an external booking for me. I've emailed them to push back and now they have decided ignoring my emails is the best way forward. What can I do?