Sure. If it had been the case that I would have accepted the booking from the son under any conditions, and it was purely and clearly "just a misunderstanding."
In this case, I would not have accepted a request from the son; this was an attempt to get around my House Rules and requirements; on top of that, I was lied to and then told stories that didn't add up; on top of that, there was a big problem.
So, I wind up losing the 50% refund on future days, as well as dropping two hours that I didn't have to lose on dealing with it. That's a loss, and one in which ABB CS did not have my back-- they want me to cover a customer courtesy refund that benefits them at my expense.
Again, I invite hosts to think through the potential problems here, and guess the real deal-breaker problem.