Hard earned cash spent and nothing to show.

My wife purchased a fridge at Checkers Hyper at N1 City on the 8th December 2019. The salesperson told my wife that they are getting 10 units in the week of the 9th December 2019 of which 8 units were reserved and there were 2 available. My wife decided to pay to make the payment in full to secure 1 of the 2 remaining fridges. In the week of the 9th of December 2019 the salesperson phoned my wife and told her that the fridge that she had paid for to be reserved had been sold and that she was going to try to get one from KZN as there was stock there. A gentleman by the name of Ryan contacted my wife afterwards and promised her that she would get the fridge before Christmas. She had no further communication from the store until my wife decided to phone the store on the 21st December 2019 to enquire about the fridge. She spoke to an unsympathetic manager namely John who said that the fridges are still being manufactured. He did offer to give her the display fridge, but he only offered to give her a discount on the delivery. Why must she pay the same amount of money for a display unit when she already paid that amount for a brand new fridge. He called her today on the 24th December 2019 to let her know that she won't get the fridge before Christmas and that we looking at mid January for delivery. It is ********* to advertise a sale item, accept a full cash payment to reserve it and have NO STOCK available. I am very annoyed because my wife purchased a brand new fridge in 2019 and now she will have to wait until 2020, when it was supposed to be delivered in the week of the 9th of December 2019. I am appalled by the manner in which this issue was handled.