Are you kidding me? TK should have left these morons stranded in Bangladesh.
1. They didn't check their tickets which clearly stated they were bound for Dhaka.
2. They didn't realize "Dhaka" is not "Dakar" on the boarding screen?
3. TK graciously flew then all the way to Dakar for free and these chumps feel they deserve compensation for the hassle!? They created the problem by being frankly, too stupid to be allowed to travel.
I would have been more satisfied with the outcome if TK had told them "too bad," when they got to Dhaka, then banned them from flying on the airline again. When do we stop coddling morons?