Before I forget, I want to report a recent customer service data point:
1. They hit me with a Y600 resort fee that wasn't included in the listed price
2. I called them and asked for it back
3. The lady who picked up the phone yammered on about how they are legally compliant (wrt how misleading they're allowed to be) for 2 minutes*, and finished off by offering $20 in Trip Coins
4. I said, "No, but I'll accept the full amount ($80 or so) in Trip Coins"
5. She countered with $40 in Trip Coins, and I accepted
*I should note that the other phases of the call (demand + negotiate + settle) took up no more than 30 seconds, in total. She already had my record pulled up when she picked up my call, and knew exactly what I was talking about, so she jumped right into her boilerplate speech.

I think they would have completely caved in if I pushed harder and dug out some statutes for them to chew on, but I was pretty content with the resolution I got from a time value perspective (i.e. spending 2 minutes to recover $40 is more appealing to me than spending 45 minutes to recover $80...let alone 43 minutes to recover the additional $40).