Nice water park, but very disappointed in their cu...

Nice water park, but very disappointed in their customer service. I've been calling for couple of days in regards of my daughter's lost items and finally someone told me that they cannot find it. My daughter left a backpack with all of her birthday gifts inside the hotel room and they told me that it cannot be located. I think they should know who was cleaning room #3021 after check out, so maybe they should talk to that person first.