Who called from 6415336734

They called and didn't say a word, just nothing then hangup. Very annorying

Called didnt leave a message. Called the number back days it's disconnected or no longer in service.

NO message. I know no one from Iowa. Quit calling [***].

Was an initial recording stating that my credit interest rate can now be 0% (making it sound like it was my current credit card company).  Pressed 1 to get more info.  They promptly hung up when I said something about this not being my current credit card company.

They called said left viivmce mail and held my my voice mail for 3 minutes blocked them.