Undelivered goods since November 2017. Store claims order never existed.

I bought a TV from Dionwired online store on Black Friday 2017, order number # ********** 95. I have still not received the television set. I have been to the local Dionwired store in Menlyn for assistance. According to Menlyn staff the online department has denied that the order ever existed or that they received the payment, despite having sent through proof of payment from the bank and communication from them confirming that the payment had been received. Whenever the Menlyn staff contacts online division they are informed that I will be contacted. I have received no communication from online division.