electricity providors who keep calling

Caller: Unsure - claim to be amazon

Automated voice saying there are Amazon and that I have placed an order for an iPhone and to hit 1 if that is not the case. Hung up

Keeps calling and leaving messages didn't answer

Rang wanting to discuss my electricity account...very hard to get her off the phone. She wouldn't stop talking. Do not answer !

From the message left it sounds like the usual Indian call center operator with a coached Aussie accent.

Unknown nuisance call. Happened a number of times.

Keeps calling I don't answer them

some punjab wanting to know if I have received a letter from my energy provider about a coming price hike...I hung up on him