How can we ask riot "WHAT THE HELL IS THIS" ?

Now, "champion select" is the most stressful part of the game for me! Can you imagine? I lost several "3 LP" just to the system! Once I lost promotion bcs of this! I was first suspected to my internet stability, like one packet lost may cause client to go on a freeze but after I monitored my pings i found I have stable internet with a very low packet loss. I have absolutely no problem playing the game and my highest ping is below 60ms. But randomly I get the champion select timers going off while I'm not able to pick or ban. Mostly its like what ever I do, nothing changes on client, like there is no confirmation from servers and sometimes when I click "Accept match" the dialog stays on top of client & I can see timer is going off but I cant do anything! During this I check my ping and internet stability but its totally fine! I know by experience that if I just pass the champion select I can play the game with zero problem. I don't really know what RIOT is doing with new client, but i swear I hadn't had such problems 3 or 4 patches ago. I reported this as a bug but it doesn't seem to get any attention with a lot of reports they receive every day. It's really frustrating that I go down in ranked just bcs of their issues!

As it may be other's problem too, can you suggest a way I can REALLY communicate this with riot support?