Not happy customer

I went to but Gabriella bubble bath on the shelfs the price there was showing R 39.99 when I get to the till they told me its R 55.99, they called their till assistant to assist me, call Lady by the name Nelly who just came and started screaming that this bubble bath is R 55.99 the was also another lady there who was talking making me a floor in front of customers, honestly I'm not happy with todays service its not my duty to make sure that their product are on the right place even that R 55.99 was not there, the only prices that was there it was only R 39.99.