National Principal Group, LLC Payday Loan Complaint

National Principal Group, LLC Payday loan department,

Payday loan Can't contact lender Can't contact lender Texas

I am being harassed by a company that will not give any of their information. They are not only harassing me but also my brother and an old roommates MOTHER, whom is n't even related to me. When I ask them for information they refuse to give anything. They say it 's for a payday loan that I do not have. I checked my report and there is nothing even close to that on there. They continue to call but refuse to provide any sort of written documentation or tell me who they are. They have also threatened me with jail, which I know is illegal. How do I find out who these people are and have them appropriately punished?