Same thing just happened to me today.

No message. I called back 2 hours later. Automated message said the phone was disconnected.

Answered the call from same number today.  Advised they wanted to lower the interest rate on my credit card.  I asked which one and they stated my Visa and Mastercard.  I asked- which specific card I was being called about and they could not answer.  This is a company that is not associated with your credit card company and they are just trying to obtain your credit card information or authority to access information.

bozos just keep on calling. no message and no ability to call back. Phishers who should have their fingers amputated.

Continued calls from numbers not recognized but reported as scam calls. Coming from many numbers. I will not answer calls that have numbers or restricted or unknown as an identity. So far unable to block such numbers or find a way to stop them. Not just an annoyance but I find an invasion of personal privacy.Undoubtedly these are illegal contacts coming from a scam organization that has found access to long lists of phone numbers extracted or stolen from a business, phone company or other scammers. The instances of these happenings have increased substantially and the interest at the FCC in correcting the condition must be exceedingly demanding, complicated and expensive. Where can one get a voice that can get some serious action to correct this situation?