Humiliation by supervisor

Colleagues and I went to pnp to buy dove products for a free travelling bag as advertised. The supervisor went looking for it after we've shown the advert. She came back and told us to read properly since she had to go all the way looking since the paper says hypermarkets not supermarkets. She told us to ask her for the job instead of running after freebies.She even accused one of my colleagues of being high on dagga