I am loving this game! I am almost 100% done, though I'm a little stuck on how to get the last phone number (I already have the stuff from the ice cave).
Also, I found a bug, after leaving the ice cave via staircase, the stairs filled with snow and crystals, and the main floor exit leads to on top of the warehouse.
Thank you very much for the bug info and for the screenshot! We are trying to fix this issue right now.
Do you remember by any chance if you quit to the main menu (and loaded the game back) or finished the game (and loaded it back) before encountering this glitch?
As for the last phone number, if you've already found the stuff from the ice cave – try checking out its product info with the product scanner.