Called for daily, (sometimes twice a day), for a couple of months, then they would stop calling for a couple months before resuming. The caller id always shows: "Floor Covering." They never leave a message and always hang up when the answering machine kicks on. They have used two numbers so far: 313-357-6135 and 313-357-6133. I have tried to look them up, but cannot find any business under that name.