Companies that have recently pissed me off:
Liquorland.
Delivery truck does not use the delivery dock, but stops on the street, reverses at a angle so they can use the raised part of the pedestrian crossing as a unloading dock. Not safe for drivers, pedestrians or their own staff and against DA.
Been going on for months. Contacted them, with out improvement. Today got dobbed into council, local MP and media.
Cyanergy.
Talked to them about a cheap heatpump hot water system 2 years ago. Keep calling me even when I tell them not to call me. First rule of sales, don't piss the potential customer off as now there is definitely no way I am buying from them.
While we are at it,
Resinc Solar.
Similar, except door to door sales. Very pushy, won't take no. Also no up front cost sees you pay more.