More and more people who are filing for bankruptcy have retail credit card debt, and those bills are getting harder to pay off with record-high interest rates.Store credit cards, which most major retailers offer, typically carry higher interest rates than traditional credit cards because the people who have them tend to have lower credit scores and banks consider them more risky.But those rates reached an all-time high of an average of 30.45% in September, according to Bankrate. The record rates came after ...