Wieon Enterprises — asking money, saying that my work is not accurate

They did the same with me like they did with others.
I have completed my work on time and submitted now they are saying that my work is not accurate.
I called them so many times and asked that what kind of accuracy do you want
They said type each and everything as it is.
I clearly asked them that if there is a wrong word then?
They said type as it is ma’am.
And now they are doing this.
I got a mail and a message from advocate resources saying that they have filed a case against me.
Please help me because this is not my mistake at all.
They are doing business like this and making money.
Please take action against them.