There are a couple of refs (LOL, I can smell the irony) that I reckon are so biased it is a complete joke. If I am coaching a team with them reffing and they start calling one sided, I just call a time out and then POLITELY question their logic. Usually this only enrages them more and they become even more biased.
Once that happens, I consider I have given them a chance to ref fairly and so I usually say "F#$% it!". Call a time out and then I tell my players that they are going to call fouls regardless of how hard or soft you go, so go hard and make any foul count. If you are going to be called for a charging foul when it is a block, then make that player hurt.
One game I had a player on four soft fouls in the first half, first play of the second half they went on a hard drive into the key. They were out of the game, but so was the other player.
I know reffing is hard, but when you're biased and you annoy a coach like me who places a high emphasis on fairness, there will be casualties.