If you accepted the conditions nd took the job tough. Grow up stand on your own two feet.
I can see exactly where you are coming from and have had to negotiate several employment contracts from ridiculous, to "a bit more sensible", however I know that as a young pilot, inexperienced and desperate I was stiffed a couple of times.
Sometimes I do think and international "body" of pilots, not a union, that agreed a basic set of principles would be a benefit to business aviation.
Even within my company I have seen two pilots that should be equal earning vastly different sums with big differences in T's & C's.
Some pilots just aren't good businessmen.