I have been interviewing for jobs to change careers. I did receive an offer on one but then got an interview for another. I found out that I did not get the 2nd one (which I really wanted) so I went back to the first. My offer was contingent on a couple items including accepting/signing a contract. I had not received it yet and when I called the program director, he didn't know who I was. (Interviewed with someone else but called him as his name was on offer letter.) I not only had to explain who I was (background) but now he wants to interview me. Doesn't make sense why I would need to interview again if I have the job offer. Should I reconsider this job offer and keep looking? Any thoughts/advice?