I received a call from an agency called "First IRS law office". They told me I have a day to pay $400 towards a Pay Day loan that I took out a year ago or so and was never able to pay in full. If I don't pay the 400 it goes to court and I will be charged with Internet Check Fraud. This according to the guy I talked to. Is this a valid charge? What can I do to take care of it. Short of paying the 400.