Poor service N12 KFC, Klerksdorp

KFC on the N12 Klerksdorp is suppose to be a drive through facility, which it is not. You order your food, make the payment and then get told to go wait in the vehicle parking area because some of the food is not ready yet. We were told to wait the food will be brought to us. It did not happen as after a while we had to go back in the shop to go and collect our food ourselves. Is it possible to put a notice up beforehand to inform customers that some food will take longer than normal and therefore you need to park and wait. Is this then really a drive through?