All of the sudden getting multiple calls from this number. They never leave a message. No idea who they are, so why would I answer?

It's a collection agency.

After being told the person they are looking for is not at this number and promises to remove the number from their database, they have called two and three times a day over the last week.

I keep being called by this number and when I pick up no one answers and when I call the number then the other person on the other end doesn't want to give me any information about why I'm being called

Started calling once a day this week, does not leave a message.

Received a call from this number, not even letting me know who they are, they just starting representing themselves as GOD. But little do they know GOD never hinted to me that they were calling.. Lol, so guess what?  they called asking for a person that I know by that name some 8 years ago? If they google her they will find her so why call me. They said that they will remove my number, etc but if they don't I did. You see, before the creation of apps, I created a contact in my phone especially for these telemarketers titled DO NOT ANSWER. So I saved them under that. These randoms have no respect for us so I will saved them the trouble from forgetting that they said that they will not call me again.