Lance Technology passed the interview, but didn't call to work. Why?

There are two possibilities. First, they have found a more suitable person (either internally recommended or indeed more suitable), and second, they don't want you to work yet, for many reasons.

Yes, I think it's the most reliable.

Call the personnel department and tell them that you are a new employee and the interview has passed. If you want to know about the work arrangement, they will usually give you an answer. If you don't know anything about it, you don't have to wait. Good luck.