Is the Zoom bleaching package suppose to come with whitening trays? Box said trays included, but there weren't any in the box.

I had the zoom whitening done in the dentist office and was given a zoom package (box) for home touch up treatments. The box they gave me said it had trays, but there weren't any trays in the box. My dentist said she could make some at a cost. How can I get the trays without paying more money ? Why give me the kit when I don't have any instructions or trays ? Do you know how I can get instructions and trays. My dentist doesn't seem to be much help.