I received an email from Coles about this offer. So checked for this offer being generic and it sure is. Pretty similar to earlier deal posted by coxymla : https://www.ozbargain.com.au/node/230765
Steps:
1. Apply and be approved for either a Coles Rewards MasterCard or a Coles No Annual Fee MasterCard by 31 May, 2016 and make a purchase on your new Coles MasterCard within 30 days.*
2. Your $100 will be ready to use within 2 weeks of your purchase. You'll receive an email from us when its ready.
3. Spend a minimum of $100.05# at Coles Supermarkets. Scan the flybuys barcode on the back of your new Coles Credit Card.*
4. You will then be asked if you would like to use your $100 off.
TnC —>
New customers who apply and are approved for a Coles Rewards MasterCard or a Coles No Annual Fee MasterCard between 4 April and 31 May 2016 and make a purchase (excludes cash advances) within the first 30 days of the card approval date will receive $100 off a single Coles Supermarket shop. $100 off will be activated on your flybuys account and available for use within 2 weeks of your first eligible purchase. $100 off will only be activated on the flybuys card quoted in the application process. To redeem the $100 off you must scan your flybuys barcode on the back of your new Coles MasterCard and spend a minimum spend of $100.05 after savings and discounts in one transaction at Coles Supermarkets or BI-LO (excluding smoking/tobacco product purchases and all gift cards). $100 off can only be used once and expires on 30 September 2016. Excludes Coles Express and Coles Online. MasterCard and the MasterCard brand mark are registered trademarks of MasterCard International. Credit facility provided by Wesfarmers Finance Pty Ltd (ABN 58 601 282 455), Australian Credit Licence number 470916.
To redeem the $100 off you must scan your flybuys barcode on the back of your new Coles MasterCard and spend a minimum spend of $100.05 after savings and discounts in one transaction at Coles Supermarkets or BI-LO (excluding smoking/tobacco product purchases and all gift cards). $100 off can only be used once and expires on 30 September 2016. Excludes Coles Express and Coles Online. MasterCard and the MasterCard brand mark are registered trademarks of MasterCard International. Credit facility provided by Wesfarmers Finance Pty Ltd (ABN 58 601 282 455), Australian Credit Licence number 470916.