Is the studio required to fill out the customer's business card template?

Question

Work organization

So, given - the customer who orders the corporate identity, the studio that performs it. One of the points of corporate identity is the design of business cards. Naturally, we make mock-ups of business cards, hand over an order, and receive payment. After a while, the customer turns and says, but you can change here and here, make other names and positions. Then he does the same again. We have new employees, do it for us. The question is, is it legal on their part?

Answer 1

"business card design"
"but you can change here and there, make other names and positions"
What are you talking about? About ordinary paper business cards, or is it something on the site?
After the second time, I would say about paper ones - whoever prints, let him edit, about the site - "either let's take the site for maintenance, or we will train your new employee how to work with the admin panel for little money"
You gave the customer the source of business cards , not PDFs?
After all, the site has an adimnka, give the customer logins-passwords and instructions on how to edit employees?

Answer 2

Everything depends on the contract. If you don't have one, then you don't have to.