How would I go about contacting the theater staff on a personal issue. I've tried the contact number but all I'm getting is the voicemail.

Not sure never had to but I would suggest leaving a message with your contact info so they can contact you

Have you tried going up there and speaking to a person? In person.

Where would I message them my info?

I'm with Scott. I'd leave them your name and number and see if they would return your call.