Inconsistent Rewards

I have had problems with absa rewards since August 2015. I have been liaising with absa due to them telling me that I have been suspended from the program due to the fact that the account that they debit is closed. I have told them on more than one occasion that they are correct that the account is closed. it was closed in 2013. I never gave any details to ABSA stating that they must debit a account that is closed. From the very beginning they were given the credit card number and instructed to debit it in one amount for the year. they have done that. Everything was supposed to be fine. Every month end with out delay I get my rewards from the purchase of petrol from SASOL as promised. However I get no other rewards. I phoned absa and once again they tell me that the rewards account is suspended due to the account that they must debit is closed. If so how do i earn my sasol rewards if the account is closed. This is totally pathetic service. ABSA debited my credit card for a once of payment for the full amount. I have had enough of this pathetic service. Please explain to me as to which purchases I will get rewards and which account I do not get rewards. Maybe I don't understand