I have been having hangups from this number for about a week now.
Someone advised me to not answer with my business name but to answer with "Hello".
As soon as I did this, the call became "live" and was not automatically disconnected.
The caller said he was from Simply Energy and knew my name and my address (from years ago).
I have now asked him to take me off any further call lists ... so hopefully that is the end of these problem calls.

Yep I'm same weird caller

2 missed calls while o/seas. Pleased they didn't last long enough to divert to my roaming number

Had a missed call from this number, won't bother calling back! Thanks for the advice!

i just recieved a call from them it came from perth im in melb and never heard of that energy company probly a scam becareful ppl :)

They called me today saying they where calling about my account from simply energy then promptly hung up in my ear!!!! Strange, I don't gave an account with them that o know of???

Another winge to ad. Its been on my work phone as well while I am on R&R. Pain in the ass as I have to respond. Should shut them down today. Pestalence

Called me 20 times in the last 4-5 days.

I had few missed calls too, when I answered they call from call centre on behalf of Simply Energy. Sale Sale Sale. Unreal

I've had about 10 calls from this number and no messages left and no voice when I answer.  I think it's a dodgy caller and they get access to your phone data when you answer (then again I'm paranoid).

Have even tried to call on my landline at work and it cuts out or is engaged.

I too have had about 20 missed calls from this number over the past 5 days.  No messages are left, and when I answer the call, they hang up.  When I call the number back its always engaged.  Its very frustrating.

5 calls in 2 days. Haven't answered it and nobody leaves a voicemail message.

this number has been calling me for about 2weeks everyday 3/4 times aday, havent answered it as i wont answer numbers i dont know, have called it back and like a lot of you have experienced it just gives a busy tone, really annoying would like it to stop.