That's EXACTLY how SV works and frankly it annoys the hell out of me. You spend countless hours interviewing. Recruiters are overly excited and hyper when talking to you ("You're the perfect candidate. bla bla"). And at the end when they decide to not move forward with an offer they don't even have the decency of sending a quick "Sorry, it didn't end up being a match" email. Your emails inquiring on the status on the other hand are often not responded to anymore.