FICTITIOUS STORY: I hired a carpenter ther other day. When he went outside and used his electric saw, the air was grey with sawdust. When I told him that I wanted him to use a hand saw, he very politely told me that he would charge double for the extra time - or I could go forth and multiply.
It's YOUR business andf YOU choose the work method. If the customer doesn't like it, they can go elsewhere - as can you.
Neither of you imposes your will on the other. They want a service that you don't supply. Agreement terminates.