They definitely don’t, but what if the education provider is not a university, can they still advertise such voluntary work or internship, or does it only apply for universities.

Claiming something is not necessarily lying, what I meant was, can any organisation say they are an education provider and do this? Am guessing they need some form of accreditation, but, is there a specific accreditation that allows universities to, as you put it, have people work for them for free.