Leaverbuster problem

so I got the 20 mins buster 2 days ago because league would join the match I did all of them and then yesterday I was play with friends and it did it again and I haven't gone on since then so I went on right now and I got leaverbuster again and im tired of league client not putting me in the game and I have to do these 20 mins leaver buster its getting very annoying please take off the leaver buster I have to do