I paid for goods I didn't received

I placed an order online on 25th June 2018. I didn’t receive my order from Jet Stores instead I received a statement asking me to pay for the purchase I didn’t receive and I paid for the good I didn’t receive. When I queried them, they give me the ref no ********** 0926/g0. I don’t know what must I do with the reference. I received the August statement now and the matter is still not resolved. I have never received such terrible service in my life before. What disgusting Service I received from Edcon. They don’t care. They are just greedy for the customers to buy and pay. I think they need more s****s to deal with customer or what they called CSAT s****s