They have called three times and hang up when I answer. Got the number via *69... which tells me it's a phone bank and their employees are 'just making calls'. Company is "Payment Systems" which is just another Merchant Cards services calling to solicit your companies Credit Card business...
I put these types of calls in a DNA (do not answer) entry on my phone with a "special" ring tone (mute) and I don't get bothered with the call from that number again. if they leave a message I'll deal with that.