Macy's Call Center Representative interview questions

Applied online. Emailed next day to online schedule for phone interview. Scheduled interview for two days later. Phone interview twenty minutes. Offered job during phone interview, paperwork with offer emailed directly after

First was a phone interview where I told them I wanted the customer service position with the 9-6. Then brought in to do a computer assessment. After doing the assessment and being there 2 hours the very rude HR rep told me that the position was filled and were looking for sales rep. Did they jist fill it while I was there? Wasted my time and told me I would have to reapply for the next group. Instead of what most companies do and just hire for the next one. Did I mention total waste of my time?