I'd wait it out. They already said they would call you in 24-48 hours and you don't want to look desperate to a lender it might make them wonder why.
Did they have you go through identity verification when you called? Sorry your post is very vague and not really giving any details as to why you had to call in the first place.
Yeah that sounds like just identity verficiation which is really common post all of the data breaches. I think you're fine and yeah I would wait it out.