I recommend not wasting time answering calls from this number. They appear to be shady by not answering my request for their company name. If you have some free time and looking to amuse yourself, I would suggest playing along by providing erroneous information and when you have had enough, try to get a company name and location from them. Try asking to speak to a supervisor too. This company, or whatever they are, are violating privacy laws and refuse to provide information to those suspicious about their activities for fear of complaints being filed against them.