I called back number (03) 9340 8150 was put on hold music but no one answered the call.

It’s scam

they keep calling looking for Trevor, then proceed to tell me that my electricity bill is $25 overdue

keep calling leaving blank messages try to call back and says the number isnt even connected , another time waster spam pain probably selling solar, electricity or something else i am not interested in

Accidentally picked up an unrecognized number. Telling me I have extra 10% on my electricity because I have been paying my bills on time in their record. I thought good. Then I refuse to give out my personal details. The person on the other end got angry and I hung up. Afterwards, I received 7 calls and 4 empty messages in 30 min.