Regarding your first point, that they have more outs than you. There are 3 of them. Of course they have. Secondly, if no-one improves, which is likely, you still win. So, if your raise with KK is called by 22, 33 and 44 pre-flop, quick maths tells me you win the pot about 50% of the time. I know you want to win all the time but, with them calling to the river you're getting 3/1 about an even money bet. This is what you are looking for.
I know it's frustrating when idiots suck out on you a few times in a row, but you must remember, if they weren't making these bad plays, you couldn't beat this game. You will get their cash in the long run, even if you don't get it in this session, Good Luck, Mahogany17