SPOILER ALERT!
Briefcase number can be gathered in the bathroom but not in the drawer :).
For the phone, you need to enter a phone number which you can get somewhere (maybe in the briefcase? :D)
horrible at checking socials and even gaming which is my fav thing to do so sorry took a min but excited to hav se help now I can c what's next. I really appreciate it. So intriguing its drove me nuts to try and try again but to b honest that's surely what u wanted players to do caus it keeps them coming bk and also sticking around to c what happens and most definitely ME! Subscribed for updates also so thanx again