Didnt link Absa Rewards

I got my Absa Credit card 23/01/2015, when i went to the branch to fetch and activate my card i advised the employee to link my credit card to my absa rewards, the employee agreed to action my request and said that it is linked. 9 months later, i notice that after making significant purchases i have not been getting any absa rewards for it. i call the absa reward call centre, were an agent told me it has not been linked and that it is my fault for this as i supposed to call and link it as per terms and conditions, however, why would anyone call in to link it after the branch employee said it is done. this is unacceptable and i expect to be rewarded for ALL of my purchases made with my credit card since.