Why would my previous employer do this? please read below. ?

I was laid off from my previous employer because they decided to close my office down and they offered me to take over another location , which I was ok with relocating, after a few months of having me bounce around to different t branches , they decided to let me go because their plans for my relocation fell through, so they ended up giving me a nice severance package and said we are sorry , I been having a hell of time finding a new job , I search and apply everyday , this has gone on since January of this year , Still landing nothing , I searched today and my previous employer is now hiring for my old location? Like WTF? The branch is closed down but now they are hiring? So I applied again. Have you ever experienced anything like this before? Like WTF?
Why would my previous employer do this? please read below. ?
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