Scanrite issue

I went to but eggs at spar meer en see on 25 Nov 2019 i than saw the price display on the shelf R76.90 then i took 2 packs emeraldene extra large eggs,at the till they were scanning R89.90 i then went back to the shelf to verify i was right.the till packer said the price is for something else so i should just pay, then i told her to call supervisor same storry wss said but she called a store manager than a store manger took his time to arrived at the shelf then he said the eggs on shelf is for something else i will not get them at that price only if the barcode corresponds i ask what confuse me is that none of the price scanned at the till corresponds with what was on the shelf i ask him where is the price scanned which is displayed then i will pay at the shelf there was R84 90 at first he refused to give me at the R76.90 i saw he then after i ask for the priced was scanned it only when he authorised the supervisor to give me at 84,90 not at R76.90. What a shocking service i got from the store manager at spar i took a picture to verify that. But it is a norm that if it is not expired stock it wrong price. Please can someone help that shop.my receipt no is 4492 time 18:22. ***