Calls from 339.502.6670 and 339.502.6690 both seem to be coming from a residence at or near 655 Sherman St. near Bella's Pizza in Canton MA. Again they are most likely harvesting validated numbers, especially cell numbers, to bundle and sell to telemarketers. Once you answer you are on the list. Best not to answer, after a few times they will give up. If they can't validate your number thy can't sell it.