Did not answer. Called back. They sell security systems for your home. They gove a option to be removed from call list. Opted out and then blocked there number.
Called my office number (which I am obligated to answer), hawking their home security systems. They could not answer questions about their stuff, like "What is your State of Texas license number for security system installers?" and "What is your State of Texas license number for security system sales?", both of which are required to do business here in Texas. They are operating outside the law. Do not answer these callers if you can avoid it.