Received call about duct cleaning and it was the same person who called previously and when I told him I was not interested he was very abusive, claiming that he would do things to my wife and daughter that cannot be printed. I keep him on the line and then advised him that the call was being traced by the authorities and he abruptly disconnected. I called back and the recording said that the number is not in service. Hopefully this will stop the calls from these pain in the -ss telemarketers with sewer mouths and perverted minds!!