<prompt> Human: I dont know the exact situation but I know that my parents credit history is really bad.Back in 2006 my dad opened his business, taking money out of all his long term investment portfolios to start it up. He got behind in the initial filing of taxes and he has been paying for it to this day.My dad struggles with his business because he cant access any lines of credits. He gets denied everywhere. So far they have two Parent PLUS loans that had to be cosigned by my grandparents. Its not like they cant make paymentsarent trustworthy, its just they got behind a long time ago and its been killing them since.Its really killing my family that they cant get a good line of credit. What can be done, if anything? I would love to help them  <response>: Your parents need to increase their income and decrease their expenses to pay off the debt, and learn to live on the money theyre earning and not borrowing excess. 