Have no clue who or what this is suspect it is your typical offer of some type and they have nothing better to do then to call are bother people who are working. If you don't know who it is then don't respond.
Said, "this is your credit card company, press 9 to speak to an operator". I pressed 9, and asked the Hindu-accented person if he had my number there. He said, "why don't you suck it, because I'm going to [***] you hard".