Disrespectful supervisor

Very disappointing and appalling customer service attitude from a Cambridge supervisor by the name of Thandekile Mthembu at Cambridge Newcastle KZN, very rude and please cambridge staff we are customers, we not your friends, we come to the store to do our shopping and there is a mistake that was done and I need it to be rectified and Im advised to go to a certain supervisor, I need my query to be resolved, not for a supervisor to tell me that who said I must come to her, if duties to be a supervisor are overwhelming then give the position to someone else who is deserving it, we cant be disrespected by your so called supervisors who dont want to be hands on with their job.