Shocking Franchisee behaviour!!

I had a negative review of a KFC branch, due to repeated poor quality of food and I was told by the franchise owner that, my family and I are no longer welcome in KFC and that we should stay away. I was told by him that I was the only person in our town that complained about the food. When my wife wrote on social media that, apparently we are the only ones in town to complain, the franchise owner attacked us verbally on the same social media stream. Both my wife and I lodged online complaints on the KFC website. I was called back the same day and requested that a senior manager of the YUM group call me back, so that we could resolve this matter. It is the3rd day today and still no call! My wife has not been called at all, to date. When I told the franchise owner that I would lodge a complaint with YUM Brands, he told me he would even give me the number of the head office in Texas, because we wouldn't get far with this matter! It seems he was correct! YUM Brands is not interested in resolving their customer's complaints, or else they would have followed up on the matter. Totally unprofessional behaviour by both the KFC franchisee as well as from YUM Brands.