Do they not have an answering machine? I've called twice, but the phone just rings for several minutes with no answer (whether real person or recorded).

Hi Callie, Thank you for bringing this to our attention. We never expect to miss a call from our guests so we sincerely apologize if this has been occurring for you. We will follow up with our team to see why this is taking place. We apologize for any inconvenience this has caused, but thank you for your time. Have a great day! Kind regards, Grimaldi's Guest Services

I've never had to call them, so I really don't know. But, if calling doesn't work; I'd try emailing them.