If somebody's being toxic, then please, mute them
(Disclaimer: This is all my personal experience; actual results may vary)
Trust me, you'll feel so much better after games with toxicity than you did before. You won't be nearly as tilted. For your sake, and the sake of everybody else who you might get matched with should you choose to queue up again, mute toxicity and report them afterwards. You'll walk away with a sense of indifference that leaves you ready for another game. It'll be like it never even happened!
[slayer-jinx-wink]