Called mid day at work on my cell. Left no VM

I cant believe on my day off I get call from Sam that couldn't answer a question and told me to hold Cause he was knew transfer me to someone and said money is required now..sound like Bull [***]!! Pass on soon

Left no message. Caller ID said "unavailable". I never answer those calls. If they call again I'll block the num,ber

Called my cell phone, but I didn't answer, and they didn't leave a message.

Called again a few seconds ago. Never leave a message!