calls cell phone, does not leave message

RPM Collection Agency they call but they don't leave a message.  I have a new number previous owner must have owed a lot of people.

Debt collector trying to collect on "debt" that I did not owe. They refused to answer any questions about who they were, where were they based, who is their agent of record, they then hung up...Total scam..and total scum..carry on from a previous scam company.