Another call from this No Name number to cell 2-7-13 - 10:37 a.m.  Hung up before call went to voice mail.
Another site says:  Caution, 770-340-4844 is a "spoofed" number, which means that whoever called you "tricked" your caller ID to display an incorrect phone number. Telemarketers do this so you cannot complain, but they failed... you can still file a complaint here to fight back against unethical telemarketers.

Have received several calls from this number. It seems very shady. When you call back an answering system says the party you have called is busy but will be notified you called.