Portfolio Recovery is monotonous about using residential and cell phone numbers no longer in use. When I called back the number it said it was no longer in service. I have already reported this company to all government agencies that investigate debt collectors that use fictitious phone numbers. They are cowards. They are a fraud and they NEED to be stopped. What they are doing is illegal. What they do is WORSE than an old debt! Which by the way, I DO NOT HAVE! They SAY they bought an old debt, but they are LIARS! It is their way to make a buck and a persons life miserable. Report them right away to the FTC (Federal Trade Commission)!