WTF IS AUTO FILL?

DYNAMIC QUE WAS ALREADY STUPID ENOUGH, NOW AUTO FILL? I DIDNT ASK FOR TOP, I MAIN ADC, CAN FILL JUNGLE/SUPPORT, BUT I DONT TOP, AND THX MAINLY TO TP, TOP IS TOO DAMN IMPORTANT, SO I LOST MY TEAM THE GAME, BUT MY TEAM DIDN'T BLAME ME, BECAUSE THEY UNDERSTAND HOW STUPID THIS IS. HOW MUCH MOENY U GOING TO PAY US RIOT?IM AT CHALLENGER ELO AND FOR BOOSTING PRICE THATS 80BUCKS A GAME. FOR WHOEVER DESIGNED THIS SHYT, I SIMPLY HAVE ONE QUESTION FOR YOU. HOW MANY SHYT DID YOU EAT THIS YEAR?