Lewis cash back was a lie

Hi my name is Nandipha I have a complain to make and I'm very angry ,I received an sms from Lewis store and iwas asked to rush to the store and get the cash back and I t also asked me to RSVP if interested I did and the following day I went to the store, before I did the purchase I asked about the cash back and it was explained to me that anything I buy from an amount of 5000 I will qualify for a cash back of 2000 ,that sounded tempting and interesting I then app**** for a laptop my application was successful and when it was time for me to reciever a cash back I was told system is down they will give me a call in two hours time to collect my cash back I took my laptop and went to work,I never received that call and I had to send a WhatsApp text to one of the ladies whose working at the store, she then sent a text back saying she was sorry to inform me that I do not qualify for the cash back due to the fact that the cash back was for certain customer's mind you I'm one of the customers that never missed a payment ever since I started buying from Lewis store,another reason was that the item I purchased was not under the cash back thing but when I checked laptops was also under the cash back and I was told anything from a price of 5000 then il qualify after the application I was told to come fetch in two hours time tht I'll get the call by now she's telling me that I did not qualify Lewis is lying to its customer's and is posting lies and they manipulated me to buy and did not fullfil their promise I'm so dissapinted and I will never buy anything from Lewis ever again what they did is wrong and I still want that cash back before I take this further they cannot advertise lies ,or maybe it's workers they take the money to themselves whn they should be giving it to customers the business must do an investigation and call all the customers that baught items last Friday and find out if they received the cash back the business myt be surprised there's ********** committed by employees as well but I still want my cash back