First I am really sorry to hear what has happened to your effort. There are few reasons where you will not get any reward from a bounty. The bounty might be a scam or you have not followed their rules correctly. IF you are sure you have complied their rules, then go ahead and contact the bounty manager directly so he might help you. As per my experience, If you fo 10 bounties, only 3-4 will get you a real reward.