This number just called me and did not leave a voice mail. From the comments on this site, it seems it's better than people don't answer.

Called at 2:45 a.m., didn't identify which card had been accessed by a third party but they notified me that I needed to contact their security department.

Midnight 7/19, garbled and hard to understand, something about my bank account. Called back, busy, and then no answer.

same as everyone else called back no answer...busy after that

Received a call from (780) 638-6515 on 7/20/2010 @ 4:55pm. Caller ID said Alberta and I didn't recognize the number so I didn't answer. My phone recorded their recorded msg, very garbled, especially the parts where they say their company/bank name and what account of mine was supposedly compromised.  I was to press 1 to be transferred to their security department.  This call reeks of a scam.  DON'T ANSWER OR CALL BACK.The 780 area code is in Alberta Canada and I seriously doubt any U.S. company I do business with has a Canadian security branch that handles US accounts.