A man called stating he was waterproofing basements in my area and started to ask me about my basement. I informed him my house is on a slab. That ended the call.

A woman caller claimed she represented a basement waterproofing company and said that this company had recently completed a job in my neighborhood. She then went on to ask me questions regarding my basement walls and foundation, in an effort to secure a "free" home inspection appointment on behalf of her business.

Who is it?  Cell Phone call.