Why do some shops never disclose their contact information in the recruitment notices outside, but they will publish their phone numbers when transferring them?

Some shops have posted recruitment information outside for a long time, but if you really ask, she will say that we are full. In fact, he doesn't want to recruit people at all, but just shows it to outsiders, making them think that our store is very hot and needs to recruit people to expand its business scale! He doesn't want to recruit people, and of course he won't leave any contact information!

And the transfer was because the business really couldn't go on, and he lost money. He wants to change stores as soon as possible. The longer he spends, the greater the loss, and of course he will leave his contact information!