UST-Telecom Scam Invoicing La Verne, California

I received an invoice on 02/24/12 in the mail from this company in the amount of $425 for Telecom Maintenance Agreement. No purchase order number or work order reference. I had no idea who they were.  I had our IT guy take a look at it just to make sure it was not really something that I needed to pay. After some research, we noticed it was a scam.  I sent the invoice out to other state agencies, so that they would be aware of this. Come to find out some of them had gotten the same invoice. We have since turned this into the Attorney General's office. Scam and I will not be paying the invoice.