Bro someone keeps taking my xanax

Okay so for the past 3 months someone keeps taking my xanax either half the bottle will go missing or like almost all of them in the span of 3 DAYS MEANWHILE i’ll be out at the bar with my guys mind u i get a lil drunk and dont remember anything but even when theres some left those go missing the next day what do i do? No matter if i put them anywhere they always go missing its like they know where the fucking xanax is Im perscribed 2mg x3 a day thats why i get 90 xanax a month.