We got calls from this number (and several others all listed below and all will get this same report)
They claimed to be a company called Sterling and they were calling regarding a convention, I was immediately suspicious because their caller ID came up as "Spearmint Rhino" (googled it - gentlemans club) and they could not provide me a url or call back number.
For a week or so everytime they called I asked them to stop calling, then eventually for a manager (always got hung up on for that one)
It turned out after checking my phone logs they had apparently gone through our phone menu and called several other people a half dozen times each pumping them for information. And were still doing so I have blocked their numbers