Keeps calling my small business every day. A woman who says she's calling about merchant payments, and saying something about Mastercard changing their rates. When we tell her we don't even accept debit/credit cards for payment, she insists on speaking to the business owner, and hangs up on us immediately when we say the owner is not available. If this isn't a scam, it's highly unprofessional. I'm not answering their calls anymore.