Gonna keep details as short as possible, i'm really paranoid atm.

Manager of a business

Mostly girls as employees

Literally 80% of the girls do 25% as much work as they can. I understand that no one likes work, but they seriously go on their phones and giggle, no work is done at all.

I speak to them about it politely

Get accused of all sorts of jumbo like being sexist

One of them says she can report me for harassing employees (she's dead serious) and the rest agree (witnesses)