You haven't been sending money to a loan company. You've been sending it to scammers that are pretending to be a loan company. Signs of this scam :
1. Paying a large advance fee for "collateral". Real lenders do not do this. Only scammers.
2. Sending money through Western Union or Moneygram. Scammers insist upon this. Those methods make the money untraceable. Real financial insitutions use bank wires.
3. Sending money to someone in another country. This pretty much guarantees that the scammers will get away with their scam. Since the money was received outside the U.S., no U.S. law enforcement agency will have jurisdiction.
Sadly, you shouldn't expect to see your $2K again. In a few weeks, the scammers will ditch their disposable cell phones and start again with new phone numbers and company names. The FTC has a webpage about this scam here :
http://www.ftc.gov/bcp/edu/pubs/consumer/telemarketing/tel16.shtm