Price change

I was shopping with my husband and bought house brand double ply toilet paper priced R84,99 ,I even showed my husband when we got to the till it rang R89,99.when I queried the price it is then that Sindisiwe was sent to check and bring the barcode with the R84,99 price.she went took out the R84,99 and put in the R89,99 price.making me look like a total fool at the till.this is unacceptable behavior,