I wrote most of it here:
Anyway, long story short, I quit this job about two months ago. Since then, they keep posting job ads but without success. One guy started working, he worked for 2-3 days and never returned.
A week ago, I got a call from my boss. Even though I didn't heard from him since I quit. He started asking me if I found a new job, why don't I return to them etc. I said no.
Just this morning, I got another call from company. Basically, they are offering one salary bonus, they are willing to pay all this time I was out of work and they are offering a raise of about 20%, maybe even more.
If I look at this offer, just from money perspective, it's pretty good. But when I think about working in shifts, bad boss etc. I don't know.