Have been called by someone from this number several times, the same voice each time.  He says that I qualify for a change in merchant services.  When I ask what merchant services, he just repeats the opening pitch.  Telling him that I do not have nor use merchant services results in him trying to argue with me that I have such an account.  As a web designer who has set up merchants, I know what merchant services are (take credit cards and transmit payment to a business banking account) and I do not take credit cards except through Paypal, which works just fine for me.  I have told him each time that they are not to call again, but so far that has been ineffective.  If I get another phone call, I will be reporting them to authorities for harassment.

I've been called three times, the second time I picked up and there was actually someone there. He had the same pitch mentioned above, basically saying that based on my company's credit card volume and low fraud blah blah blah, that I qualified for wholesale credit card rates. He was obviously reading from a script, which wasn't very good at, and he stuttered a couple times. After letting him get through his pitch, he asked for a time to set up a meeting ("Are you generally in your office during the day") and then for a time of day, to discuss lower wholesale rates or something. At this point, I asked why I qualified for lower rates on a merchant account I don't even have, told him he was full of it, and hung up. The number almost immediately called back, and I sent it to voicemail. He didn't leave a message.

these people keep calling and i have asked them each time to stop calling, yet they keep calling.  when i call back and ask to speak to someone in charge, he actually tells me that i have to lose the attitude! nice business - talk to the state of texas attorney general!!!

Pretty much the same scenario here - he talked "down" to me as if I was a real idiot, which I know Visa rep would never do.

I got this same call.  The caller kept to the script as best he could while I dissected his inane approach.  
Example:
Him: "A representative will be in your area next week.  So would morning or evening be a better time for a representative to visit you?"  

Me (Annoyed): "I never said I wanted someone to visit my business.  Why would you ask me what time of day would be best for the representative to visit me?"

Him: "So, A representative will be in your area next week.  Would morning or evening be a better time for a representative to visit you?"  

Me (More annoyed): "I just told you I never said I wanted someone to visit my business.  Why would you ask me what time of day would be best for the representative to visit me?!"