Bad Service and no product

Today at 14h35 we went to the Welkom branch KS240 at the Game Centre. We went through the drive-thru to order 7 buckets for one and the person over the intercom said they do not have wings we must opt for the nuggets. We asked her again if there is no wings and she ignored us answering the phone. Again now she asked we must take the nuggets and the kids said no they want wings. As we could move forward we came to the window where the staff member with no formal work clothes and no name tag. We asked her that there is no sign or indication that there is no wings and we have waited in the queue unnecessarily and wasted our petrol and then you have to deal with a rude person as she then ignored us and went on assisting the next customer at the intercom. I asked her for her name and with an attitude said her name is Elizabeth Menyatso. I went inside requesting to speak to a manager and spoke to Shadrack Pebane who is the shift supervisor who apologized for the wings. I asked him why there is no signage that warn people about the problem of the wings his reply was just sorry. I am not happy that we had to wait so long in the queue and then deal with such rudeness. When we went to the other branch at the Goldfields Mall we had the same problem and the same bad service. Is this how people exercise the KFC values that every guest leaves happy. We asked again for the manager who told me that she just started her shift I asked her that why they don't put up signs her response was then they're gonna chase the customers away. Eventually we called the regional manager who told us that the wings they have is frozen and that the other branch is not her responsibility. Wow KFC your service has become very bad.