Centrepay is an online tool designed to help people on Centrelink pay for essentials like rent or bills through automatic deductions. But financial counsellors say the government service is instead being misused by some providers to exploit vulnerable Australians.
In this case it's through the Centrelink specific Centrepay system. Given it's a government approved system they can presumably remove approval of this company for any reason, so it doesn't have to reach a level of law breaking, just an obvious to everyone ethical breach.
In any case, as stated in the article, Rents4Keep are currently being sued by ASIC for breaches of the Credit Act.