Delta Air Lines interview questions

I received a call for phone interview after I completed application and personality test last Wednesday. The phone interview consisted of 3 questions. (How would I upsell?, How would I deal with a client resistance of the sell? and How would I deal with an upset client?) Then I was told that I had progressed to the next step which is an 1 on 1 interview. I had the interview the follwoing Monday(this morning). It went well, was asked the same questions plus a few more in general same type ques. Was asked to sell the interviewer on a product (give a short scenario/presentation on selling her a pen or a pencil which would she buy?). I felt good about the interview and was told that I would get a call by end of week or sooner with a big smile when I was told that. Don't know if I got the job or not? I believe I did well, the interviewer and I seemed to click well and she was very pleasant.I had been told by someone else that they were hired and took the drug test that very day of 1on1 interview. So I don't know if that is the norm. or if I still have a chance of getting the job? Any suggestions or feedback please. I really want and need this job!!!

Applied online which consisted of uploading resume and taking online assessment test. Was called 2 days later and was given a mini phone interview with HR. I was told I passed that portion and next needed to go online to complete an application (which was essentially re-entering my resume and answering a few questions). Three days afterward I received an email saying they were no longer interested in me! WHAT?! How did that happen? Nothing changed from when I submitted my resume to entering it on their application. I had no further interviews that would make them decide not to continue further. I am left completely confused as to why I wasn't given a 1:1 interview if I had passed everything. Strange ....