How do you navigate contract disputes when the client’s expectations change mid-project?

[Btaliat]

It is possible for the freelancers to have issues with their clients in some instances. Sometimes, it may because the clients only want to play being clever by half. That's why it is always better for freelancers to be keeping their signed contracts. Doing this will make them refer to the agreements that thehbagge before the task was done. What other things do you think the freelancers can do in this scenario? Say it in the comment for others to know.