Still no acceptable response!

I laid a complaint last Saturday (KFC Customer Care Case CAS-109381-S5P5M1 Confirmation KFC:***) and I still have not got an acceptable response. I missed the one call on Monday due to a meeting and the voice mail said they'll call back later or the next day. So I waited all of Tuesday for the call! That call only came on Thursday and they let it ring for like 5 sec. So also missed that one. This time there was no voice mail explaining what they going to do. And now I'm livid. This pathetic service and handling of am already unhappy customer. If I don't hear from you soon, I will be visiting the branch worth the full intention of making the biggest scene possible!