Yes, this is a legit number. I got a call from it maybe 2 or 3 minutes after I called PNC to replace a stolen check card. It was simply a confirmation call and is actually in place to protect your account from misappropriations. I get similar calls from my credit cards when I make a large transaction from a merchant I hadn't bought from before. They'll just ask if a charge in the amount of $X.XX is legitmate or not.
I've also ignored this number before and that seemed to make no negative impact or delay on my requests or accounts, so feel safe to not pick it up if you do get a call.
called me from 412-803-0100. Said they were looking for someone. When i called the number back they said thay had a business named Basys in Linthicum, Maryland. When I called back again from a different phone she told me she did not know why the business calls were coming to her personal phone because she is in New York. After calling a different day, her answering machine kicked in and said her name was Donna Nelson. The calls are coming out of Pittsburg, and there is a Donna Nelson with a line number with that number. When I called back today, it had been disconnected. i feel that this is an inside fraud by more than one person.