Call business where I work for, supposedly for a merchant business called "Systems", asking for owner. I am office manager and I don't give up information easily.
After second call of the day, when I asked to be taking out of his list, the guy was really, really rude and said that I would get WAY MORE calls because I asked that. I called back, same guy answered and in an "funny" tone of voice was saying "Oh! You're not the owner of the business, right?". I asked him to talk to his supervisor. The guy made up a name, barely changed his voice and said he was Antonio Lima, the supervisor. He wouldn't call a supervisor. After a while, he hang up on me.

Called my business twice (and hung up on us twice) about a business merchant account having to do with my credit card machine (which I do not have!). After second hang-up, I called back and they answered the phone and hung up without saying anything. I am guessing they are scamming for something.