Dollar General interview questions

I noticed they were missing an employee after going in a few times during the week and asked about the associate and I was told that they were finding a replacement. I then asked where to apply and I did. Then I called to store manager to let her know I was finished and the next time I went in to the store, she finished the hiring process then asked me to fill out some more information on a website. After that, I just had to wait for the background check, then I went in and finished my new hire training and started working on the floor.

I was interviewed at 2 locations and didn't recieve either job. I was upset because I was basically being interviewed "in case" someone else didnt pass their drug test.