Disappointed in Checkers 60, delivery integrity and promotional discount that they didn't give

I did order on the 4th of Aug for delivery on the 5th of Aug between 8:00 - 9:00, some items, order ***A, total of order R763.90 after my promotional discount. When they delivered on the 6th the delivery guy claimed that he couldn't get hold of me, and returned the items to the store and cancelled the order. I immediately when I see the cancellation, re-order exactly the same items order ***A. When they delivered they charge me R893.90, meaning that they didn't allow my promotional discount. Since then I phoned weekly their customer care help line, every time I have to repeat the issue, ref no ***8, still till today they did not credit me. Every time they promise that the money will reflect in my wallet still the same day, as now 26 Aug 2024 at 3:45pm still not the case. What do I need to get this resolved, or must I just accept this is the type of customer services I will get from you, or forget the discount and write it off as a bad experience

THEN THEIR FEEDBACK

We do apologize for any inconvenience caused. Please be advised, your money was credited into your wallet on the app.

AND MY RESPONSE

The money was not credited, just the original cancelled order but not my promotional discount, REALLY!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

IS IT SO DIFFICULT TO UNDERSTAND THAT YOU STILL NEED TO GIVE ME A CREDIT OF R130. THE DIFFERENCE BETWEEN MY ORIGINAL ORDER OF R763.90 THAT WAS CREDITED AFTER CANCELLATION OF THE ORDER, AND THE AMOUNT THAT YOU HAVE CHARGED FOR THE SAME TROLLEY ON THE NEW ORDER OF R893.90. YOU DID NOT GIVE THE PROMITIONAL DISCOUNT ON THIS ORDER!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!