Can't Help It, I Feel Completely Screwed Over!

So, two months ago I had to leave Chile very quickly and with little warning. At the time the place I worked, which I won't mention here as much as I really would LOVE to, they told me that everything would be fine and I would be able to continue working as soon as I got back to Chile. Well, a week after being in the US I started getting emails saying, "When are you coming back, we need to know." Of course my broke ass had no money for a plane ticket so I really couldn't give them a date. I did tell them that I was working on it, and they did know ahead of time that I was probably going to be gone longer than a month. Of course I wasn't getting paid for it and I thought everything would be just fine. WRONG. I continued to get nagging emails twice and sometimes 3 times a week. Finally I received an email telling me that I had to write a letter of resignation otherwise I would be fired for abandoning my job. I was told if I didn't write that letter I would be fired with no re compensation... probably meaning the "finiquito" so, I wrote the letter. Then I had to print a bunch of shit, sign a bunch of shit and scan that shit and resend it back to a few different people. I was told I had to do all of this for MY benefit. I was also told that this way I would be able to be rehired as soon as I got back to Santiago and would be able to start working right away. LIES!!! Now that I look back, I am pretty sure that I did them a favor by doing all that paperwork shit so they didn't have to pay some tax shit on me when I wasn't even there working. I also believed with all of my heart that they were going to hire me back as soon as I got back to Santiago. WRONG. I received an email saying that they would love to hire me back and loved having me on the team but unfortunately they can't hire me back. I would like to put in here that I can understand where they are coming from that I was gone for over a month and it was probably bad for the company to save my spot and blah blah blah! But really, I can't help it. I feel completely screwed over, not to mention I am pissed that they would PROMISE that I could start working as soon as I got back to Santiago when really they weren't going to fulfill that promise! So, yesterday I was crabby and angry and job hunting AGAIN!! I feel like all I ever do in life is job hunt!! I sent out one CV and what do you know, they called me back. So, I have an interview tomorrow and this would be the reason that I can't say the name of the company I worked for because.... I am trying to work at a different location of the same company. Smart?? Probably not....