My situation is as follows:
I answered a question with +500 bounty, I took the time to test it, I verified that everything is working and gave all the elements in order for it to work.
But the asker doesn't want to accept the answer or give any more comments, because everything was clear.
The last days of the bounty (5 days after my answer), I found a new answer, the same as mine (in term of solution but with others words), accepted and rewarded the bounty, It's not fair but I accept it.
On the other side, I took a look at the user who got the bounty. Here is the surprise, I found that he asked a question (with -5 votes) with only one answer and he accepted it. The problem is that the user who answered this question is the same who gave the first question.
So I feel that I wasted all the time answering the first question, when the asker intention was to get the answer for free, and it's not encouraging/helping the community.
I have flagged the question and described the problem but nothing happened till now.