HELP on LMO questions/process times BC

We have applied for an LMO in BC beginning of December 2012.
They have sent us a letter approx. 3 weeks ago, notifying us that there was a document missing...
We faxed that in the same day we received the letter.
Everybody keeps saying that their office will contact you, does that always mean by phone or could that be by mail as well...?
And is that only to notify you if anything is missing ? And if they sent us that letter, does that mean they have and are processing our application ? We phoned them about 3 weeks abo and they said it would take approx. another 2-3 weeks. we called again today, and they said the same thing, about 2-3 weeks...
It seems everybody in that office sais something different, just wouldn't wanna miss their phone call...
Thanx