Gentleman asked if I was Mrs. (used my last name).   I asked who was calling and he gave me his name and said he was calling from a roofing company, but I forgot the name.  He said they were working in my area and wanted to know if they could come out to give me estimate on any work I might need done.  I thanked him and said I didn't need anything at the present time.  He said they did roofing, siding, windows --and I repeated again, I don't need anything done.  We then hung up.  I'm curious, if he was calling from a roofing company then why did caller ID say NOT AVAILABLE?  You would think they would want their company name showing.