Walmart Store Associate interview questions

submitted an application got called in for an interview the next morning I got there just in time the manager made me feel very uncomfortable like I was interrogated the hold time , I still answered all questions asked but the most unprofessional thing I ever experience was that after the manager one on one interviewed me she ask me to sit back at the waiting room and wait for a second interview which sounded great I thought I had it in the bag 10 minutes later she called me back and said the second manager is busy with other things so she will be giving you a call ???? wow ok what ever !