Really not happy with the Voice's response after refusing the trade in Message from Afar

[Bumluc]

In Message from Afar, the Voice offers you a trade - the healing for a unknown favor.  I'm trying to play a ethical character.  No ethical person would accept that trade because of the unknown favor.  And then later on the Voice chastises you for refusing a 'gift' - newsflash, a trade != a gift.  I'd like to be able to respond to the Voice in my character a little and push back and say it wasn't a  'gift' but a trade and not one I could accept.