Trip Report: Jail

I forgot to pay a phone bill of approx. 400$ in Germany in year 2000, since I went to live in South America. The guy who rented me the apt. said that a mail arrived and I was requested to show up in court. I never showed up, since I haven`t been back to Germany. I will be traweling to Germany this month, anybody knows how German laws handles this? Similar I guess. I hope I don`t get arrested at the airport, before I`m able to solve this.