I hate this so much. I've also been jerked around in the past when interviewing. If someone takes the time to come in for an interview, don't they at least deserve a generic 'Thanks, but...' type of letter informing them they weren't hired? Instead, recruiters prefer to lead candidates on and eventually hide from them hoping they'll take a hint. Can someone in HR please tell me why companies do this?
I'm guessing you're a younger worker. Your language about being "jerked around" and believing that you've done the company some courtesy by taking the time to come interview with them speaks of a time when companies had to compete for candidates. Depending on your industry, those days, brief as they were, ended in 2002, and companies have not remotely entertained the idea that they have etiquette responsibilities in a long, long time.
You are the job seeker. The beggar. They don't need you. They don't think they owe you 'sorry' emails or explanations or anything. In this day and age, you need to do the work. Send the thank you notes, follow up on the leads, and, don't ever whine about how you were treated.
Trust me, no one likes this climate. Everyone misses the days of consideration and exception. But those days are gone.