Some characters in the game just don't get along, such as borcha and banduk, when one of them comes to you with a complaint on the other, you have the three options.
1.banduk lose less morale, borcha more (You side with banduk)
2.borcha lose less morale, banduk more (You side with borcha)
3.even morale loss on each side (You sit back and not give a damn)
Mostly just choose to side with the guy you like more, or try to find companions they agree with.