Tried that. Apparently some reason they didn't know (It was a HR girl that called me and she left for the day).
About 20 mins. I could probably just show up to one, ask them about the interview and rush off to the other place if I'm wrong.
That would be my solution. You should really show up to interviews early anyway, but I'd say show up 30 minutes
earlier than what you intended. Make an educated guess on which place it is. If they called you on a smartphone, you can most likely trace the call. Hell, look the number up online to see if it's associated with a specific building for the business. If you end up showing early and you get the right building, then play it cool, don't actually show up at the interview part that early. Make small talk with people around the business, check anything they might have posted on the walls, etc. Just make it look like you're absorbing the whole place, but be sure to be natural about it. If you're at the wrong place, just head to the other one, spend the extra ten minutes or so doing the same thing. It'll be fine.
EDIT: Slightly on-topic, I'm really really considering getting the Limited Edition OST despite the hefty price. But if I do, would someone on here be interested in buying the Vinyl disk of remixes for a reduced price? Orrrr is that considered foul play here on GAF? If so I'll edit accordingly and most likely just give it away in some sort of contest.
EDIT 2: I just realized that, excluding pre-order bonuses, Chief's campaign armor, and Specialization armor sets, we only have 18 helmets... compared to Reach that doesn't seem like that many.