My company received invoices from UST for the amount $425 dated 6/11/2012 and 12/4/2012. Unfortunately, our accounting department paid these ficticious invoices and is out $850. This year, I received 2 renewal invoices dated 11/13/2013 for $425. I researched and discovered that we don't have any systems that are warrantied by this company. I researched further on the internet and learned that this is a scam.