I don’t know how there was in the barbershop, but for nothing in my life I would have agreed to treat (I’m a dentist) a person who on the threshold demands from me a discount of two-thirds of the price. Not because I am unprofitable, a frog or lazy suffocates, just from such people a lot of problems and brainstorming.
Moreover, even if this person decided to be treated for the official price, I would still refuse him. You should not contact such people - it will only be worse.