Intentional Banning of Team Members Champ Picks

Please please please riot fix the champ select where, when you have selected a champ, your fellow teammates cannot also pick them ahead of you without permission nor ban them to piss you off. I have had this happen to me three times with the new champion Kayn.. your games last an hour... three games of playing a champ I do not want equals three hours of abuse by strangers i am forced to play with or receive a dodge penalty if abort... this is ridiculous and must be fixed. Today I took matters in to my own hands and ran down the lane of the team member who did this. We lost but I told him never do it again and that I hoped other players might do the same to him in protest. No one saw how serious of a problem this is and would rather win than acknowledge it and flamed me for my actions. But how might I ask am I supposed to affect someone I can't see otherwise, and furthermore play a team game with someone who would do such, to a complete stranger. I payed him in kind, an eye for an eye. If there was a system in all the modes, not just blind, it would be so easy to fix this. You could then give permission as usual to switch champs if requested after lock in. Hope people will respond.