What is Go-Go?

My sister works for a company that buys 250-300 and sells mortgages, so it's been interesting for me to hear about this housing crisis from her point of view. On whole branch of her company (in Texas) had to be completely shut down and all the employees lost their jobs. But, that's not the most shocking thing she told me. At her office 250-265 building, there is a whole department of people who work all 250-251 day, calling people who haven't made their payments. These employees basically sit on the phone all day, yelling, harassing, and bullying these people, trying to scare them into making their payments. 250-250