Poor leadership management and very rude staff

We poped in at Kemptonpark food *****s as they had a promotion on there soft drinks as per Kempton express news paper any 3 for R50 when we got to the till to pay the woman told us they made a mistake on the promotion and that it was no longer the promotion very rude to us we asked for the manager and was told he was on a call he don't have time to come to us we have found the staff to be very rude and disrespectful to us most the time we shop there poor management and leadership taking place there