Oh, that sounds bad. Did they tell you to go to Mambo in a snarky, "I don't care about your concerns" way? It doesn't sound like they were giving you a helpful tip, but I don't know. If they were snarky, and I had to deal with a long walk with members of my party who were at both ends of the age spectrum, I'd be annoyed with Kidani too. I hope you get a survey and write about the lack of food service at Kidani. At least that might help future guests.
We are hoping to have a different experience, of course. We already rented a car and all members of our party have no problems walking at a good pace. I will miss the food, but plan on stocking our villa with some groceries. I have heard bus service at Kidani is great and I have also heard it wasn't good. Friends went in January, stayed in a studio and will never return. Bad bus service was one of the reasons they gave for not returning.