Also, as far as I'm aware there are only three ways to gain points to level up. You may not be doing them:
Maintain a high place in a ladder (or finish high in the seasonal ladder)
As a general rule if you don't win games, no matter how many you play, you won't level up fast.
But since the only way to really improve this is watching games and practising you'd be doing the correct thing by playing lots of games.
But, as Fizzer said - if you have an ad-blocker running all of this is next to useless.
If you have trouble with finding out what's causing ads to be blocked visit http://wiki.warlight.net/index.php/Ad_error
If you're completely sure you've worked through the troubleshooter and still have problems visit http://warlight.net/ReportBug