Rude and dismissive manager

The service and attitude from the cashier straight to store manager is horrible. Went there this morning to get a bottle of water and get cash back with my purchase as i normally do because its more cheaper. Went to the kiosk for cash back she send me to the large purchase queue were people had large trolleys full of groceries so opted for the cigarette counter to pay for the water and get cash back of R100 to give to someone waiting for me. Two people were waiting at the cigarette counter no cashier i asked one person the he said his been waiting for more than 15 and he just wanted to pay for bread so i went to the store manager to ask if thes any1 help at the cigarette counter he rudely and with a dismissive tone that we must go to the back of the queue to pay for the items. So i said to him its only 1item he said with a rude tone "why are you trying to argue, go to the queue and pay there if you want to complain you can go to customer service". I told him that the service is bad his reply was "im not his boss to tell him what to do" which i never told him what to do except to state the fact that the service is bad and the staff is rude and dismissive to customers. They even send customers to run through all tills looking for change if they dont have change. So the chain of bad service is rotten from management to cashiers. The store manager even argues with customers if they complain to him without even a small remorse or apology to customers by saying "bye mam enjoy your day". Dismissive and condescending.