PEP store busy corner mall

I went to pep (busy corner mall) this morning got there quiet early before the store could open, we waited outside, by 09:00 the store wasn't opened and they were busy facing up and doing back shopping. They only opened the store at 09:10 whereas their opening time is 09:00. I then bought two items the mayonnaise and hair spray. The price for the mayo was incorrect. I made the cashier (Tlou) that the mayo at the shelve said R31.99 but she refused to sell with that price. when I asked for the manager, the manager herself said I'll have to wait since she's busy with the call on the help desk.