Client keeps freezing

Hi riot . . . these client freezings are getting old . . . I cant play ranked anymore because im afraid of the client freezing during champ select or during match accepting. Now, I cant even play aram because my client is freezing as soon as I enter queue. Its NOT my computer, all other programs were functioning just fine (I even had a task manager open to see). PLEASE TRY TO PATCH IT I KNOW THIS GAME IS FREE AND YOU DONT OWE US ANYTHING BUT I HAVE SPENT REAL MONEY ON RP SO IM A LITTLE INVESTED.