Overhead bin bag scam.
Generally, the flight went OK. What bothers me is their luggage weight requirement to be able to put it in the overhead bin. They only allow 7 kg then they want to charge you $30 plus a bag to check them. On the way to Thailand my bags were fine, on the way home. They say they’re too heavy with the exact same content. My bag charge was $65 on the way home. The overhead bends were virtually empty. Was the scale faulty? I wonder!