If you’re Prepaid and wish to recharge your service via BPAY, the available recharge amounts are $10, $20, $30, $40, $50 or $100. The required biller code is 7179 and you can find your BPAY reference number through the Payment method section of My amaysim
You'll need to recharge at least four working days before your plan is due to renew to ensure the payment reaches your account in time for the renewal or prior to your credit running out.