As is true for everyone else, tranthidung deserves to be respected, but I don't think it is appropriate to leave negative trust if he is disrespected. A more appropriate response would be for tranthidung to consider ending his professional relationship with Lightlord (as far as I am aware, he has not).
Right, if someone is failing to pay, the right response is to just leave and not even warn anyone about what happened

Looks like you skipped your meds again.