Horrible Customer Service and empty promises

Good day,

Usually I have only good things to say about Checkers Hyper Fairbridge, but I've had it with your Willowbridge branch. I bought a 3 for 2 special on Huggies Gold 4+ (62 pack) on 27 Aug. The store didnt have enough stock and the branch manager gave me a "rain cheque" confirming that they will contact me as soon as the stock comes in so that I can collect the pack I already paid for. A week passed and nothing, not a phone call, message, nothing. On 3 September I quickly popped into the Willowbridge branch again to pick up a few items, completely forgetting about the nappies, only to walk down the isle where a staff member was handing over 6 PACKS of the exact same nappies I need, to a customer who wanted to buy the special deal. I inquired with the lady staff member as to whether there are any stock left only to find out that there's nothing left. I then brought this to the attention of Thozama (wearing a client services sash) who did NOTHING-just confirmed they dont have my product in stock. Thozama's attitude was so bad that it felt as if I was inconveniencing her by asking questions. After this, I approached Alison, who confirmed that the manager who did my rain cheque "was in the toilet". I waited a further 20 minutes, but clearly either Alison ****, your manager had diarrhea, or someone was to lazy to face me with the truth. I specifically asked Alison that I want a call back explaining why I was not contacted when stock arrived. To date I have received NO call back. I also have not received the stock I ALREADY PAID FOR! I am sick of your staff's unprofessional attitude (the staff member who I called out in the isle laughed at me and said-sorry my sweetie, the stock is done!) As a manager, Alison clearly wasnt interested to assist me and the intern in your office was clearly not paying attention to my request as your staff couldnt even find the book where my request was kept even when I gave them the reference number!!!! I want answers! I want this to be resolved before close of business on 6 September! Failure to do so will result in escalation to Gavin Wilson and Head of Customer Care