I was offered a credit card over the phone about 10 years ago by Discover Card for about {$4000.00}. I was later referred to a debt collector who took me to court as I fell behind my payments whereby a payment arrangement of {$100.00} was agreed upon. 

I have asked the debt collector to consider writing off the debt as I have payed them towards or above {$10000.00} over the years, well in excess of the original {$400.00} credit card limit that they extended to me. 
Unfortunately, the debt collector have always declined this arrangement ; they actually indicate that my debt has increased from about {$400.00} to about {$16000.00} because of interest rates which to me seem utterly artificial or unfair.