Complain unhappy customer

Yesterday at Pick n Pay Middestad, in Bellville there was a special on groceries like Rama, juice, vegetables, fruit and more, what I did not like was the pick n Pay staff members where the first people to take everything that was on special and did not let the customers to take for themselves, point number two, at a till when we where wait to be service on queue, the Pick n pay staff members where paying for their items and kept us waiting for long, at Kiosk the lady by the name of Nwabisa Krweqe was helping the staff to do this injustice practice this happen all the times and manager who I confronted did nothing about.