Bad service

I went to Kfc Bara to purchase the Tuesday wings special and the lady who was assisting me told me that the special ended on the 26th of June only to find out that the special is still being advertised on radio and on the internet so I ended up buying an alternative meal that I did not even want, if this is the kind of service that they give their customers then it is ridiculous because its not the first time i've experienced such service.