Daughter answered the phone call from 847-752-1149.  He asked if she was me.  She said no.  When I answered the phone, no one was there.  I called them back.  I said you just called me?  He said that this was Greg, and they are expanding into Lindenhurst and wanted to know when they could come to give an estimate on air duct cleaning--morning or afternoon.  I told them neither and hung up.  Greg never told me the name of the company. I thought this was a suspicious call, especially since they called on a Sunday afternoon.