I work for a bill collection company. 98% of our debt does not charge interest, and the 2% that does, it's usually only about 2% interest rate.
Debt collection is about recovering debt, so while they seem "heartless", they aren't at all. It's probably less than 10% of the people they get into contact with who actually want to pay their bills, 90% just say "fuck you I'm laughing my way to the bank"...
So bill collectors can seem a bit nasty on the phone because they assume everybody fits into the 90% rule. But if you talk with them, they will usually always remove the interest and settle with you to pay the original amount with no interest. There is usually a catch, you have to set up a payment plan, or pay it in full within 30 days... If you miss a payment, the deal is off.
Sounds like the guy in the original story didn't show up for court, nor did he even attempt to work it out with the bill collectors before it went to court. Sounds like he is just stupid, and deserves his fate.