Missing Progress in Seasons

I am playing in seasons and I am currently in division 2. However, I am playing multiple games where my opponent is intentionally quitting the game after I am taking a huge lead. & I am not getting any credit for the wins. I have had this happen on my promotion game to division 1 and I have had it happen to me when trying to promote or compete for title. This behavior should be unacceptable. & I should not be punished because I am winning. I am asking that someone looks into this and I am hoping the right thing is done, by giving me the credit for the matches I clearly have done well in and should/would have won. I mean some of these forced quits are taking place pass the 80th minute.