You weren't listening.
Either that, or you weren't believing:
You are going to drive yourself and everyone around you crazy; Just forget that you put in an offer. Forget it! It didn't happen! Go on with your life!
Doing Shortsales is like mating Elephants; A lot of high-level decisions, a lot of Screaming and roaring, and it takes a year to see results.
Now, go away; I don't want to hear another peep.
I'll echo the responses below. The problem with short sales is that there is no way of really knowing when, or if, the lender will respond. There are a variety of factors that can influence this. The list agent might not be versed at communicating with the lender, the sellers short sale package may be incomplete/missing paperwork, and on and on and on....
At some point, you'll need to decide whether the property is worth the hassle, and wait.
Prospect Equities Premier
I've had them respond as quickly as 3 weeks (yes, that's very fast), and had them take 6 months only to respond with a resounding "No!" at that late date.