I've been getting these calls. I have a debit card with Wells Fargo. People, I agree with everyone who has said this is a scam. They would call from a 1-800 number for sure. Just block them. They've called me at abnormal times for a bank. They shouldn't be open at the times they've called.
It is not Chase. I called back and operator says mailbox full. A business will not have a full mailbox. Some kind of Rep would pick up the phone/ an operator or a professional recorded message would answer.