Keeps calling my cell

I've been getting a call on my cell phone from this phone number pretty much on a daily basis - as I don't recognize the number, I don't answer... they never leave a message, so today after they called, I decided to try the number to see what company it was... It rang and then a man's voice recording came on and says "this number is not in service, please try again... GOODBYE" - it's not the normal recording you get when you get an out of service number (usually a woman's voice), so whatever company this is, they don't want anyone knowing where they're calling from and using this line as an out.

harressing at work place

I have received many phone calls to my work from this number regarding my "debt" of which i have none - he disclosed personal information to a collegue. He said he was calling first from Consumer Crediy Services and then from Debt Management Service. I phoned DMS who advised they have received many calls from other people having the same problem but assured me its not them.

they do not leave a number for you to call back they tell you to go to a web site that is not helpful