lagging in lobby :?

iunno why im doing this just getting irritated i dont play often anymore but when i do i get lagged in lobby get kicked out of 2 or 3 games in arow lagging , and then id get one be fine in game . been happening quite a bit but sucks cause ive been getting bans now sometimes i am a bit slow on the picking but i could lock it if the lobby wasnt lagging iunno mashing from 8 seconds to lock in champ and be kicked out wait for 5 mins was okay , but then got on tonight and try to play one start lagging cant lock in my character and get a 30 min ban seriously whack just wanted to get a game beefore bed in just expressing my anger at this new lobby plz help :( asap