this is kinda funny, i say kinda but as i keep typing it makes me laugh more and more rofl, if i go into an aram or a normal and i get gold or plat players on my team and i end up feeding or getting killed a lot by some random silver-plat player all i get told is how bad i am and so one and so forth and i just laugh because its kinda funny. why are you upset at the fact that people are joking on you fro being bronze, weather they joke or not the truth remains that you are currently bronze and a person talking down on you should make you want to improve and push you to better your sitiuation.
you want people to stop? do something about it, play more, study more, practice more, i dont really care if you "think" your a good player, the fact is you may be good but obviously not good enough, so work on it, dont complain because people make fun of you. you can think about it in terms of highschool and weight if u want, where as challenger players are the fit good looking, in shape, healthy, guys and gals, that everyone wants to be friends with, then as you go further and further down the ladder you get down to where bronze would be your morbidly obese, people who dont have good hygene and dont take good care of themselves and know theres a problem but refuse to go through the hard work because their really lazy and would rather eat Twinkies, watch t.v, and play league of legends. They dont want people telling them how overly fatty they are and get upset that people make fun of them, they have the option to get themselves out of the predicament but instead they complain and cry calling everyone else assholes(which may be true but irrelevant).
just tell yourself, i dont wanna be an obese, unhealthy fatty, i wanna eat vegis, work out, lose weight, and ultimately fell better about myself not because everyone views me poorly, but because i wanna feel better about who i am!