Phone screen followed by a rejection letter 3 weeks later. 3 weeks after receiving this letter, I was called with an offer for the same position. It seemed to me that a mistake had been made. Upon accepting and working in this position I learned that the employee originally offered the position had left the company very quickly after having started in the position, but the rejection followed by an offer had never been explained to me during the hiring process, whether it was a mistake or intentional? I found out through co-workers what had happened.