They claim to be from D&B (duns and bradstreet) they want to talk to our manager about our company profile. They always leave a message and refer it to a case #.
I don't believe they are from D&B, they sound like gum shoes or debt collectors !!
I am calling D&B tomorrow and report them this number. Someone is using their name illegally .

I had several lost calls, they rush leaving the message, they call from the number above and claim to be from D&B , but leave a different number for callback, plus a random reference number.

They keep calling and stating they are from D&B.....I think they are a scam

Got a call this morning, requested a return phone number, they couldn't give me one.

This really is D&B - it's their verification team for verifying phone numbers. If they are calling you and you are not the business owner, you should just tell them that, and they will most likely reject the phone number change in their records and stop calling you.