Did not leave message

I keep getting calls with exchange 282 from Elizabeth, daily, sometimes more than once a day - they must be using some kind of robocall app because the calls vary, eg, 908-282-3008, 908-282-3018, 908-282-3091, 908-282-3099, etc. I never answer and no message is ever left.

I want to know who it is

You said your caller was Alex so apparently you already know "who it is".

Nuisance call.