Helstra!
I built a house this year that involved many tradies coming and going. Every one of them turned up on time as scheduled to perform their work. The only hiccup was two wardrobe doors were made incorrectly so were taken back and a new delivery date made and adhered to within the hour.
Then came Helstra. All they had to do was send a trench worker to lay the cables that are sticking out of the ground in a piece of conduit (I relayed this during the initial and subsequent calls so they knew what work was needed.) First planned appointment came, no one turned up, wasted 1/2 a day waiting. Second appointment they sent the wrong type of Tradie, he rang me and said "you need a trench worker....." Following an hour and a half on live chat/debate/argument at work it was left that someone would call within 48 hours to rebook. During that chat I kept stating that a private business would usually organise for someone to come out the same day as they stuffed it up. The Helstra worker wanted me to rebook, gave me the number for dial before you dig (did she think I was doing this work?) and kept stating she was sorry but there was nothing she could do, I would have to go back to square one and wait........
Anyway, the next day I did get a call, from a Man stating he was with the faults Department standing out front of my house looking at the wires coming out of the ground asking me why I reported a fault!!!!!!! Another call to Helstra and now they tell me they can't get anyone there for a week or two.