I want to stop paying rent by Direct Debit

All leases created in Cubbi prior to the 11 March 2019 only had one payment option: Direct Debit. 

If Direct Debit is the only payment method stated in your lease the owner has no obligation to make Direct Debit Optional. This means you cannot turn off your Direct Debit schedule and start paying rent by NPP and BPAY unless your landlord agrees. Speak to your landlord, if they are happy, they can follow these instructions to make Direct Debit Optional.