Ahh, every time they call you, I bet the salary has to go up, too. If not are they just offering you what you walked out on weeks ago?
If so, they're just showing you even more how underpaid you were.
It's fun to see companies like that operate and implode. Neglect your employees at your own peril. At the last company I worked for my group (3 engineers, 3 engineering techs, and a lab tech) was by far the largest revenue generator for the company. We had just come off of a 2 year development cycle for a product that was a customer hit and was generating contracts left and right and was going to generate revenues far in excess of our operating and production costs. At raise/bonus time, the development team who had suffered 2.5% or so raises for two years got a nice fat 7% raise as a reward for the success. At that point, most of us on the team still hadn't caught up with three years of inflation, and we'd delivered a product that was going to save the company (which hadn't turned a profit in ten years). A slap in the face is what we got for enduring poor raises and still delivering a product which by all measurements was a stunning success. Then the hemorrhage started.
On January 1 of the year the group imploded, all 7 of us that had developed the product were still there. I lasted the longest out of those who left because I had obligations outside the company after completion of which I was leaving the area, so there was no sense in looking elsewhere. On the day I left, I was the last degreed engineer in the group and there was only 1 other member of the original development group left. At this point, orders had been placed, but the product had yet to go into production due to the nature of the product and purchasing cycles. We were still in the tooling phase.
All for the want of a few decent raises and pats on the back for success, one of the finest teams I've ever had the privilege of working with evaporated, leaving the company high and dry in the middle of tooling up and preparation for production on a brand new product.
From what I hear, the product has finally turned the company around, and it's making a profit. I also hear stories of five figure bonuses being given, so it appears that lessons have been learned. I just wish it didn't take a great development team getting torn apart to do it.