I do some freelance sales and marketing work but am gobsmacked, and fed up, at the amount of clients that think I am an employee and that they own me.
I recently agreed to do four hours, twice a week, at a company's office and they tried to treat me as an employee, saying that the office manager was my 'Line Manager' and trying to dictate when I could have toilet breaks etc. When the work ended the company owner sent me an email saying it'd been a delight to employ me!!
I also did another freelance job, from home, where the company tried to dictate the hours that I did their work in, rather than leaving me the task for the agreed timescale.
I could go on and on!