Can a blocked number still call me after it's been blocked from my iPhone?

This number called me. I didn't pick it up the first time bc I didn't recognize the number. Then it called again the second time in a row so I answered bc I was about to tell whoever to leave me alone. At first I was like "who is this". Then I heard like this buzz noise. Then they hung up. I don't know who it was but I'm wondering can a number that I blocked still call me?

If it's blocked, then they can't call you.

No. Because it's a blocked number so they shouldn't be able to

Yes a blocked number can keep calling you. If it is blocked properly it will not however ring on your phone

Get a blocking app - the best one is built into Norton Security

I blocked a 1-800 number several days ago and they called again today. The phone rang but I didn't answer it. When I looked at the call it showed the number was blocked. Little good that does if they can still call you!