Matchmaking Freezing

So lately whenever im in matchmaking once in awhile it will freeze and not allow me to lock in my pick/ban. I then get kicked for not locking in. That in itself is frustrating but recently I went into matchmaking just for the first game of a series and it freezes on me, and I get kicked. Not only did that make me "lose" the first game in my series but I also had to wait 30 minutes because its been happening to me so much that the time is increasing. Is there a way to fix this/ any one else having this issue? Kind of frustrating.