Terrible customer service

Bad attitude from staff member at Woodmead branch Mashudu,we were asking her to check the balance on our Makro card,with an attitude she answered and said ,"but you were told to bring a proof of payment" by who she said we always tell them she then argued and said we always do , I found that very rude and undermining people please give your staff members training on customer service or maybe she can do shelf packing or cleaning since she can't stand people