Who called from 4155049946

I didn't answer and they didn't leave a message.

Called my home number.  Did not recognize, don't know anyone in San Franscisco so I did not answer. No message left on machine. Likely a scammer. Blocked the number.

They asked to speak to the credit card holder. When I asked who they were and what they wanted they disconnected.

I figured this was a phishing call when CID showed it coming from SECURE MERCHANT, so I picked up the phone but didn't say anything. I could hear background call-center sounds. After a few seconds a female voice said, "Hello? Are you there? Hello?," and then she hung up.

I did not recognize number. Did not pick up. No msgs left. Now blocked.