I am a long time customer from well before the IPO, and also a shareholder having averaged up from a small IPO holding.
I have been very impressed with how Aussie have been taking big chunks of market share in a utility sector where there is no real differentiator between retailers.
One obvious area is customer service and tech support, which has always been excellent. They have always treated me or other residents in my house with respect when making a phone call to tech support, and crucially didn't go down the toilet after the IPO like iiNet did.
The other area I have been impressed with is their very persuasive attempts to onboard new customers. I made a service request enquiry for a property that I'm intending to set up as a weekender, and within 48h, I received a follow-up call that was unprompted, yet polite, respectful, and the sales agent I spoke with couldn't have been more helpful.
So much so that when I am ready, I am confident that the internet service provider I'll be picking is ABB.
I suspect I am not the only one which is why this company seems to keep kicking goals.
Disc: Held (against my better judgement about owning utilities)