Received two calls in the past 1.5 weeks. I called them after the second and they confirmed the legitimacy of the calls, but they couldn't, or wouldn't, tell me the nature of the calls. They wanted me to go to a branch office to inquire, but the closest one is like a 6 hour drive. So I just asked to be put on their Do Not Call list.
This is TCF's number. The last time I answered this number, I gave them my info and I shouldn't have. I called TCF and they had me cancel my checking account and get a new one. I guess they do NOT call their customers and ask for info on our acconunts.