Same thing just happened to me. He not only argued with me when I refused, but insisted on coming out to my business repeatedly to show the numbers. He refused to provide me with an email or any information.
Woman wouldnt take no as answer said they were merchant services as thousands of other companies have that name and kept trying to give a sells pitch making it sound urgent and that it would affect us greatly, hung up twice on her and they kept calling back for half an hour tying up the phone line it was psychotic!!!
They have started up again, calling 2-3 times in a row, now they are tag teaming with other members of their psychotic, rude, uneducated remarks and lies. Say they already spoke to owner and would now like all of our information to begin the process. When asked what the process is and for what they hang up.
When I told them we weren't interested, I said thank-you for calling and I hung up, now they call 2 & 3 times a day and just sit there. Most of the time I don't answer the phone if I see their number.