...because I just got stuck into last pick in a queue with a duo premade who instalocked promote revive AP mid champs and the other 2 decided to troll as well to get me to dodge rather than themselves so they don't have to face the punishment.

GG, well played.

You chose to not play for 30 minutes. Stop acting like a victim.

Yep. Go do an aram and queue up again

While in Africa....

if dodge penalty didn't exist, you'd never get into a ranked game

He chose not to play because he didn't want to waste 30-45 minutes in a game with very little chance of winning and then lose elo. Don't act like it has never happened to you nor that you haven't been frustrated by it.

That being said I think the system is fine. If they instituted any other system where dodges weren't punished at all or to a lesser degree you would never get into a game because people would dodge all the time. I'd rather wait 30 minutes dodging a troll from time to time than wait an hour to get into a game because of other people dodging because they didn't like the team comp or something.

EDIT : You can indeed play custom games while on dodge timer (ARAMS, etc)