Cashnet - Excel Law Group Cashnet received a phone call stating i had received a loan, and would be arrested as my court date was tomorrow Los Angeles California

I received a call today (8/20/09) at 8:30 am stating that I owed a company called Cashnet $500.00 and had a court date tomorrow for fraud.  if I did not give a company called Excel Law Group a payment I would be arrested.  Spoke with someone named John Williams who stated he was attorney for a law firm representing Cashnet.  Gave me my address and where the name of my bank.  Got very ugly when I asked for additional information such as when was I supposed to receive a loan and would not provide me with an e-mail or fax with detailed loan information.  He grudgingly gave me the address (11846 Olympic Blud, suite 1001, Los Angeles, CA  89882).  There is no such zip code per the united states postal service website.  He stated he worked for the Cyber Crime Division of this law group.  Wanted me to do an OCCR (out of court resolution) in order to pay this fee.  Got very angry when I repeatedly asked him the name of the law firm and for documentation.   The next thing I knew someone called Jeffrey Steven from a Riverside Law Firm got on the phone and kept asking me my name and repeated that i would be arrested.  I could find no such law firm in LA.