Scam saying my phone number would be suspended

Caller: Synergy Solar

Number rang and didn't leave message. rang number back and got message bank saying the company was call Synergy Solar. I do not have solar so not sure why this company is ringing me

Caller: (02) 4012 1764

They are now claiming to be synergy lol they called me saying they were disconnecting my number with an auto or talking .Also with a fake voice messenger when u call them and fake waiting lines lol

Voice mail said it was "academic emergency" and to press button if Australian National or another for international. No students at my number!!!