When someone payed Leonardo da Vinci to paint Mona Lisa, Leonardo couldn't say "hey you can't draw a mustache on that lovely pout" etc, the persons who commissioned the work owns it, and can do what ever they please with it, i.e. copy it re-draw it, freakin burn if they choose.
...P.S. I've never found any mechanic/ workshop who would give a written quote/ on any repairs/ work , every time I've asked for a written quote I've got nothing but silence, or told to pis'orf