Physical & Emotional Abuse Support Group
Abuse is a general term for the treatment of someone that causes some kind of harm (to the abused person, to the abusers themselves, or to someone else) that is unlawful or wrongful. No one deserves abuse, period. Abuse can be emotional, physical, or sexual.
As for using his payment info. to pay what he already agreed to pay, IMHO, it seems like a legit move. But, still, it sounds like you and your son deserve better.
Best of luck & HUGS (((( )))))