To be eligible for the guarantee, CommBank staff members must be an Amber customer for a full 12 month period and your connection address with your previous electricity retailer must be in the same local network area. At the end of the 12 months if you would have paid less with your previous provider’s plan, you can send Amber your previous supplier bill and Amber will calculate what you would have paid with your previous provider and refund the difference.

To apply for the credit, send your last energy bill from your old provider to info@amber.com.au with the subject line CommBank staff guarantee and Amber will pay you within 28 days. 

Once your initial free-subscription period ends after 12 months, you’ll roll over onto the standard Amber subscription rate of $15 per month. This $15 subscription fee ensures you have access to Amber’s wholesale pricing and is the only way that Amber generates revenue - rather than by charging you a retail mark-up on the energy you use. 
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This subscription fee will automatically be charged to your linked credit/debit card. With no lock-in contracts and no exit fees, you can cancel at any time. 

Firstly check that you're using your work email address to sign up. There are restrictions applied that will not allow you to sign up if the correct email domains are not being used.
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For any further issues applying your CommBank customer discount code or signing-up to Amber, contact Amber’s helpful customer service team. Just hit the big green Support button below on the bottom right of this page.

While we really appreciate your enthusiasm, this offer is only available to customers who have received it directly from CommBank and the discount code is uniquely linked to you. This means only you can redeem the discount and it’s valid only once. 
This offer is subject to Amber’s Terms and Conditions, and eligibility criteria. However, you're more than welcome to invite others to join Amber by sending them this link. ‍