This is a company called Tanzio. Never hearing of this company I google the name and went to their website. www.tanzio.com. They deliver leads over the phone for potential jobs. The customer contacts Tanzio with the type of service they need. Tanzio calls the business in their data base that could provide a bid or service. After answering the phone, it starts to play the customer's message. At this point, you can decide whether or not you want the business. Then you have the option to connect with the customer right there on the phone.
If you have a service type business, they say they will provide leads for free. Didn't call them back.