This number is a constant caller and can’t return call-disconnected

Caller: I don’t know

I’m also only 15 they called I answered and stayed quite and they said hi *my name* I’m calling from cornerstone how are u, I tried to look up cornerstone but nothing useful came up

I also got a call on 13 January 2020 from this number and they didn't leave a message. When I called back the number was disconnected.

I just had the exact same thing wafting this number, but I didn’t call it back

Got a call from this number but it's been disconnected.

Called back and call could not be connected

Caller: I don’t know

I got a call from this number, and I got a voice message from it and it said “hello then my name” and I called back but was disconnected, I’m only 14 so I’m very scared