Searching for credit card numbers for fraud - no doubt about it they are scamming criminals who need to be arrested. Avoid them like the black plague of death that they are to your money and identity. I agree, they are credit card thieves or identity thieves of some type.
They start off like they are from QuickBooks and want to give you a 2008 software package but they also want to give you a credit card terminal. Ah, the shifty [***] want to sign you up for a merchant account and they think they can bribe people. At the prompt, I entered "2" which should take our phone number off their calling list. The first time such an action just didn't disconnect me, it confirmed back our telephone number and said we have been removed from their calling list.