Charged the normal price and not the discounted price.

My mother buys 128Gb sd card SanDisk Product Code:*** discounted at R229 until 31st March 2025 normal price R359.The discount is app**** when a plus more card is used.The cashier at the store applies the plus more card I get the email receipt charged at the normal R359 and not the discounted R229.I call my mother while at the store to ask that cashier to correct that because it's not the discounted price.The cashier gives my mother the cashiers receipt charged at R259 and not the discounted R229.I call her again saying that is still not the promotional price that must be corrected again.This time the receipt is not send to my email instead an instore cashiers receipt given to my mother promised that in 10 days the extra R130 charged on her debt card will be returned to her account.When my mother gets we check her account and notice that the normal debited R359 is still there and there is no app**** discount.I log a complaint with HiFi corporation #***.The manager calls asking me to respond to an attached pdf file of a returned Hisense product thar isn't about the complaint and I note this in the email response also staring what my complaint is about.Still waiting for a response on that.In the mean time I compare the emailed receipt with the receipt my mother is given and I noticed that the one she is given is not a customer receipt but a cashiers receipt. Therefore what the cashier then does is take the balance of the discount on the till to keep while the customer is ****** in being fooled that the discount is coming in the next says.People watch your slips and also ask that the discounted amount be the one you actually swiping for and not thar it will be returned to you on a separate day because it's not coming. The manager with the cashier are accomplices in *****ing the customer and being rude at the same time.