AR Resources Inc contacted me on my cell phone on XXXX/XXXX/15 claiming to be a debt collector, but they would not tell me who they represented until I verified my PII ( including the last XXXX of my social security number ), which I would not do because I know I have no outstanding debts. They refused to tell me who they represent, so I told them that was against the law and they ended the call. Friday XXXX/XXXX/15 I received a paper collection notice in the mail from AR Resources Inc, claiming to be collecting on behalf of XXXX in the amount of XXXX. I did have XXXX claims for that provider, XXXX on the date of service they listed ( XXXX/XXXX/15 ), but the amounts did not match either claim, both which have been paid. I logged into my insurance website to review my explanation of benefits. The standard charges for services rendered that date were XXXX and the contracted rate between XXXX and the provider was paid on XXXX/XXXX/15 in the amount of XXXX. This company is trying to collect the difference between the standard fee and the contracted fee the provider would charge, which is fraudulent. That amount does not exist to be collected by anyone, as the contracted rate between the insurance company and the provider has been paid. They were aggressive on the phone and refused to identify themselves and now, they are trying to collect on a debt that does not exist.