NO price tag, NO customer service!

Me and my Girlfriend went to shop at Mr Price Home Garden Route Mall all the way from Mossel Bay, on Saturday, 23rd January 2021 in search of a rug. We found the perfect rug (code:***) in the big pile in store. We search all over the rug for a price tag, but it was nowhere to be found. We asked a Salesperson (Sindisile) for assistance, he also checked, no tag. We asked him to please check the price for us. He came back and gave us the price of R1300, I asked him 3 times to double check and he and the other shop assistant (Christo) confirmed it was the price of the rug. So I asked them to please remove it from the pile and we moved to the long queue. When we reached the pay point, the till operator asked for the code or price tag because it was obviously missing. Our Salesperson then gave her the code and price that he verbally quoted us. But she told us sorry it is R3000. I then refused to pay that amount because I was quoted a different price for the rug. I then asked for the Store Manager the come and resolve the problem. She said she don't have the authority to give me rug for the price I was quoted, so she phoned the Area Manager, without any success. I then asked for his number to try and resolve the problem, what a waste of time... He was just sticking with his story that the system said the price is R3000 then it is R3000, I said to him, but there was no price on the rug, I called a Salesperson for assistance, he quoted me, I asked 3 times to confirm the price, did all the trouble to get the rug out of the pile and proceed to the point of sale to get this big disappointment. He said best he can do is 15% discount but won't give it for the price I was quoted. I feel they should've put a better effort in to do something from their side, I felt I was wrong as a client, even though I followed all the correct channels with an item that was without a price tag on it. The manager lost her temper with me, just stating it is a error from the Salesperson and the system not showing them pictures. Why must this be my problem? I am the client, why must I be treated like this and feel unhappy with what happened? This was not my fault, I repeatedly asked if the price was correct before I continued to complete the sale. I want answers and the rug for R1300 as quoted. This is unacceptable for me.