Bill collector sucka! . Pay ya bills.  

Called and hung up.    If its a bill collector, its a wrong #, I don't owe anyone anything.

called while I was in a meeting and let the cell phone ring only once.  also don't owe any money and few
people know my cell phone number since it is only for emergencies.

rings - I answer- they hang up - so I entered into my address book as junk call so I won't answer again

Yep, same thing, called once, no message. Scam!