Angry customer

Waltons Stationery in Woodstock Cape Town, so.****ed that its been two weeks without my sons order delivered to me. What do i do in this situation, honestly I am exhausted ive been told lies after another that the stationery will be delivered till this day nothing. I mean why do they even bother processing the order if there are certain areas they do not cover in terms. I even went as far as picking up my order but was told that it still.needs to be packed from the wharehouse. I mean I paid for the delivery. Monday its school again and my son will have to sit in class without his stationery and will once again become a laughing stock. What do I do, I need help I'm exhausted, I've spent money calling back and forth I even sent email communicating with Abby but still no luck. Hellopeter please help