Builders warehouse nelspruit

I am not happy with the service that I got from builders warehouse in nelspruit. I went there on the 29th of May to purchase curtain rails and doors, I got to their home decor department and I asked for a quotation of 3.5 m and 3m curtain rails. The lady working in that department was Lucia Shongwe said I should wait there and she went to print the quotation for me. She came back with the quotation and thinking that I could trust her I went to pay at the cashier without double checking it , I told the teller that someone else would be be fetching the goods , I'm tired and from night shift, she said it was okay. To my surprise when I got home the following day the goods were short, I asked the driver and he said they only gave him 3 curtain rails of which were the 3.5 m. I went back to the store to query this and that is when I saw that the quotation was wrong I asked the store if they could give me what I paid for which was now a gypsy final teardrop 28 mm black. The slip indicated that I paid for two of these products and together they cost R410. I spoke to one of their assistants at the store where they dispatch the goods and he said I should come back with the driver so they can go through the camera footage for that day since mistakes like these do happen but they need him so they can take his photo and scan through their database to check if indeed they had given it to him. On that day I forgot to take the assistants name. I went back to the store again on the 4th of June and this time around I was assisted by Nicholus, I spoke to him and told him what happened, he asked us for the cars registration and time when the goods were picked up we told him and he made a call asking someone to go through their store cameras to look for the car and he said he's going to the department and gate to look for something, he left us there for about an hour and only when we requested for him he came back and said there's no way the missing goods were within the store because his stock balances, and I then asked him to see the camera footage since his colleague said I should come back to see them, he said the cameras for where the truck was parked were not working on that day, I asked for the footage before the goods left the store and he said cameras were still not working ,I then asked about the gate he said they were not working. I then asked why did he say on the footage you can't see it and now that I ask where can you see it all of a sudden all cameras are not working. I asked why did you guys tell me to come back with the driver knowing pretty well that your system is not working he said well that team that told you to come back is not here they'll be here next week. I mean is this really fair that I have to loose my money just like that? I asked that so my money is gone just like that and he was like I don't know. I asked why did he make us wait for an hour knowing that the system is not working, he failed to answer me.