CAN NEVER GET A DELIVERY ORDER CORRECT, ALWAYS A STUFF UP.

Placed a R13 000 order as I wanted to start replaceing the gutters on my house. On the 1st delivery attempt 20 down pipes was short delivered. 2 weeks later they came to deliver again, 3 down pipes short, got the full order after 2 and half weeks. So i arrange for the workers to come out. The 100 brakets that was sent is SKU ***7 (square), but the order was for SKU***3 (round), so again now i have workers here and they cant do anything and work is back on a hold. Now can someone please explaine the logic, if i order a 20 x 6meters round cutters, will a bulb not come on with the loading guys "hangon square brackets, round gutters... its not going to fit." do they not double check the stock SKU numbers before loading the truck. So when i called the call centre i get told to go and sort it out at the store, take the stuff and go swop it around, after I paid for delivery charge.... That did not sit well with me.