Eskom Hoax

Just received a call from a man claiming to be from Eskom. He said my account is severely in arrears and that they would be disconnecting me. He had my name and surname. I explained to him that I don't have an Eskom account, I pay City of Jhb for my utilities. He became aggressive and threatening and I became suspicious of whether this was a genuine Eskom person or a *******. I put the phone down on him and he has not phoned back. The caller ID number was ***