It just started last week.  I hear voices or I should say a woman's voice.  Am I going crazy?

In the first video I'm explaining what I hear and when I hear it..I'd love to see if any of my co-workers hear a woman say "Help" or "Hi"...it's weird and quite frankly scares me.  There are three elevator beeps when the elevator goes to a new floor..it's right after the second beep...be listening.  It's only when the elevator is going up not down!

Here's a video of just the sound around when the floors change..

It's a little freaky and just in time for Halloween..what the heck am I hearing?