I was with Engie for the past few months, having previously been with AGL. I initially switched to Engie to take advantage of one of their offers, which I believe included some credits.
Recently, I contacted AGL and was offered a reasonable deal, so I’ve decided to switch back. They provided a $200 credit for electricity and $50 for gas, along with a 10% discount on the reference price (AGL Value Saver) and a 6-cent-per-litre fuel discount at BP, provided I stay with AGL for 150 days.
This offer appears slightly better than what's listed online. I called them directly and am sharing this in case anyone else is considering switching—it's worth giving them a call.
Been on a for a while. Here is the deal. I use it as an AGL Gas Customer.
Also, check the BP locations. Apparently there are no in SA.