I'm tired of seeing these kinds of people

So, I was playing against and it was really hard. I tried my best to avoid his bombs but it just didn't work out. He outplayed me fair and square and I'm ok with that! The problem arose when our jungler starting yelling the f word at me and saying I fed and that I sucked and what not. "Report Kat for feeding." "You let him get lvl 15 you idiot" "GG cause of kat." Of course, I muted him but the damage was done and my motivation plummeted.
What's funny is, at the end of the game, I told Ziggs he did a great job and that he was impossible to beat. What did he say? "You did really good, actually the best on your team. Just try to move around more." So my motivation and my effort stopped for because of one person. If you do this to people, PLEASE stop. You win some, you lose some but if you harass people when you are at a disadvantage you WILL lose.

Sorry but I had to get this off my chest. On another note, anyone have any advice on how to counter ziggs with kat next time this happens?