"Hi, this is (female name). I am calling about the account that you have online. Please call back when you get a chance. Thanks and I look forward to it!"
Spoken in a deceitful manner, intended to lure a call back. Anyway, very similar to previous posts on here. Collecting or helping to make you spend money. Either way it is financially motivated. So, it is ultimately up to you whether or not you want to call back (or answer in the first place) ...
Call from Virgin Casino Online. They offered me a deposit match and gave me a sign-up bonus. They asked me for my month of birth and zip code which I believe is required as part of the Data Protection Act.