Horrific service

I opened a cheque account with Absa in July, rewards activated and all...a month later I got a call that my rewards were not activated and I was asked if they should reactivate and I said yes. Today again I get a call from Eunice Malope who confirmed that the last caller made a mess and activated rewards on a closed account that has been inactive for over 5 years. I then confirmed to Eunice that she can reactivate my rewards, she then said she couldn't because I couldn't confirm the account numbers because who actually memorizes the account numbers especially inactive ones. I then asked to speak to a manager since the call was over 15 min and we were not getting anywhere...she said they didn't have a manager. How does a big institution like ABSA bank operate without managers? Also why don't have to suffer because of the incompetency that was created by them.