It was a girl from a Wachovia branch downtown calling to make sure I'd received good customer service (I'd been in the branch several times the day before) and to try to sell me on the Way to Save account. Legit but interesting....
Legit call from Wellsfargo and Wachovia following up on customer service. Don't answer if you don't want to waste time answering questions and being told about products you aren't interested in.