Who called from 2150153355

Mutated Computer Voice that I couldn't understand. Voicemail was maybe 1.2 seconds long.

Didn't leave a message. Can't call the number back either.

No message left.... Can't call back...

This number calls me but does not leave message and also when I try to return call I get messages that this number is disconnected.

When try to call back recording says, the number you are trying to dial cannot be reached at this time.
Most likely a foreign hacker using USA # to digitally use it in a scam.