Why did SF confess but not call the entrance?

There may be two reasons. One is that the courier company has staffing restrictions. If the courier can't deliver it, he has to add someone. Only the courier can recruit you, and you can't officially become a downwind employee; Secondly, the express delivery point belongs to the contracting agent point, that is, the individual contracted a certain point in SF, which is generally a place with a vast territory and a sparsely populated area, and the people recruited must not join the head office.