<human>: Can you give me a shortened version of the text?

I sent my resume to the regional manager of a company a month ago. My cousin, who is employed by said company, told me they had just lost 3 people and now would be a good time.

2 and a half weeks ago, I received a phone call from Jim, the regional manager. He wanted me to come down to his office in Pittsburgh to talk. We scheduled a time and after talking for 20 minutes, was offered the position. He sent me on my way with a stack of paperwork to fill out and send back to him (taxes, direct deposit, preemployment drug screening, etc).

I completed the paperwork and sent it to him, and put in my two weeks at my shitty factory job. 

The day after I sent it out my cousin informs me Jim was fired. I asked him to get me the number for the new manager when he could. I called up the new manager, Rob, today. He tells me:

Jim didn't have the authority to hire people so I'm going to have to rescind the offer.  But we can keep your paperwork on file for the future.

Blah blah blah. I'm pretty frustrated, I don't want to go back to my old minimum wage job. This one was going to pay exceedingly more.

My question: if the former regional manager didn't have the authority to offer employment positions, how can the new regional manager have the authority to rescind employment offers that were offered before he took office?
<bot>: offered position at new job, manager is fired while processing paperwork, new manager says the former didn't have authority to hire, rescinds offer, I'm given the shaft