Current state of Scripting

So last night me and a buddy had time to duo que one game of ranked, and well as you see by the title Im sure you can tell we ran into a scripter. It was blatantly obvious he was scripting. He was playing sivir and at first I didnt think much of it in lane I just thought wow this guy has amazing reflexes the way he is spell shielding every single buckshot. So I tried to be tricky and bait the shiled by walking up close and auto attacking instead of buckshot, never shielded. The shields were instant but at this point I figured he was just very good. It became super ovbious after I was hiding in a brush (unwarded because it was scanned and minions walked right past) when I point blank buck shot him from the bush he STIll shielded it and instantly popped ult and auto attacked, W, auto attack combo in less than 0.5 seconds. All game this continued and everyone agreed on both teams he was scripting. After game someone said "report sivir for scripting" and the player became very toxic saying "LOL BECAUSE IM WAY BETTER THAN U NOOBS?" This guy was gold 3 playing in plat MMR and I have never seen a player micro manage and cast skill this fast... I watch pro play and tons of challenger streams and never seen a player with this caliber of speed.

So what I am interested to know is what Riot does to these players seeing as there is no option to report a player for any type of hack... Is this common? How long has scripting been around and is there a fix in the works? Kinda sucks when you can only play one game with your friend and it is ruined by a hacker :) Thanks!