Caller ID said Survey. Hit the fax receive button on printer. Almost never call back

My machine just now picked up the call. No message.  Call was from Boulder Creek, CA.  Just another scammer.

Just got the call but no answer. Scammer!

Just an answer machine call. Decided to find out who it is.

Said I needed to press 1 to talk to a specialist to lower my current credit card to 6.9% APR but it did not say which credit car nor what type of credit card, (like Visa/AMEX/Mastercard, etc).  Said press 2 to stop getting these phone calls.  I didn not enter anything & stayed on the line.  The computer caller quickly hung up.