Normally that is not rare case, because most of the bounty hunter like you they did not get their reward after the campaigns ends.
Do not trust to the ICO ratings because it not means the ICO hare in top list it is good.
Although they did not receive rewards consistent with their efforts but they get a lesson and this lesson will follow alongside them forever, they will know that they need careful analysis and have reasonable choices, instead of focusing too much on rewards. Many bounty hunters have experienced from the mistakes first and until now, they have no longer wasted time and effort for the scam projects, they only go into good projects, rewards are not great but prestige and are paid in full