To beat a dead horse, I do get messages back on Facebook and emails. I just don't expect responses so quick because I know they are just 2 people and have hundreds of other emails/messages to go through and they'll get to mine eventually so I don't need to send another and clog up their response time.

And as you say, they communicate across 4 different platforms, so they have to check each one, and when people send the same message to each, they'd have to read them all before they'd send a response.