Terrible Service from Rochester Stoneridge

I saw a 5 tier dispaly unit instore marked R 795-00 on Sunday 31 July 2022. I called a staff member of the floor, Sango who confirmed that the price was correct and that stock was available. I told him I wanted to take a photo to show to my husband. I took the photo which includes the price as displayed. On Monday 1 August 2022 I called Sango to order the unit but he was off. I emailed him. On Tuesday 2 August 2022 I asked to order a unit to be assembled and delivered. Sango sent me an invoice which showed a different price. When I questioned him he explained that the price that was on the unit that day was incorrect and related to a bookshelf unit. I reiterated my conversation with him when first seeing the unit and he confimed that I was correct. I sent him a photo on both email and whatsapp which clearly shows the price that was displayed on that unit. I am now told that the code numbers on the units are different and the price related to the display unit that I want is higher and that if you look on the website etc .... it is not my job as a customer to enter a store and confirm that price tags are in the correct place and to look up on the website to confirm that the price displayed is correct. It is the fault of the store if the incorrect price is displayed on a unit. The attitude is one of WELL IT IS WHAT IT IS - WE DON'T CARE. I am still waiting for the supposed manager of the store to contact me. I want the unit and am happy to pay the price displayed and the delivery charges.