i recieved a call from here and they call my job, my mom and other family members. they say i need to go to court etc. but never use the same name of who is calling or any information on what it is they want.

harrassment. trying to collect money. says that i will go to court. says they are a collection company. scam

I received a call friday march 18, 2011 and that he was from the criminal bureau of investigation and that I was being investgated for receiving 300.00 from a payday loan, and I didn't pay it back and if I don't agree to settle that it was going to be turned over to the court house and a police man will come and get me and take me to court and if I lose than I will have to pay 6000.00. Otherwise, I could settle with them for 650.00.  And I have been looking up this number and another number that he gave me which is 5197845900. His name is suppose to be Austin Jones, which is a town that I live in which is Austin. And I have until monday at 9 AM to give him an answer before he files it for court. I'm suppose to show proof that I did not receive this money, which I can prove thru my bank, because there has not been no deposit of 300.00 in there. So what can I do to get rid of this jerk which is a foreigner by the tone of his voice,

Yes, I did Friday saying he was a criminal investigator, is that the same line he started our with you and his name is Austin Jones

THIS IS A SCAM. Scammers pretend to be law enforcement (police, sheriff, Feds, AG's Office, fake cop agencies with made-up names) and using bought/hacked loan application data to extort money for fictitious crimes or your personal ID.
The real DEA warns about fake-DEA extortion scams here http://www.justice.gov/dea/pubs/states/newsrel/2010/denver111010.html 
The real FBI warns about payday loan extortion scams here http://www.fbi.gov/news/pressrel/press-releases/paydayloanscam_120710 
The real FDA warns about fake-FDA extortion scams here http://www.fda.gov/NewsEvents/Newsroom/PressAnnouncements/2009/ucm195814.htm 
The real FDIC warns about fake-FDIC extortion scams here http://www.fdic.gov/news/news/specialalert/2010/sa10131.html 
Report to the Internet Crime Complaint Center http://www.ic3.gov/complaint/default.aspx , the Federal Communications Commission http://esupport.fcc.gov/complaints.htm , the Federal Trade Commission https://www.ftccomplaintassistant.gov/ and your state AG, as appropriate.