J.W.
I will give you my number, have them call and speak to my cat! He will explain to them that humans don't care if pets eat their food too quickly. He will explain this because tomorrow before I leave I will fill his bowl with enough food for the weekend. If he eats it the first day well I guess he will diet after that.
I think the thing that would irritate me is unless they have been gone for a month they didn't have enough food to begin with and then blamed the kid and now are trying to drag you into the drama.
I was trying to think why they didn't just have the parents of the kid pick up dog food, after all their kid "messed up". Do you think perhaps because if they laid this bull on the kids parents the first thing out of the kids mouth would be BS! mom, there was only a cup of food there the first day!!