New Branch very slow

A new KFC branch opened close to our home and I took my daughter there for ice cream. There were 1 person in front of me in the drive thru and 1 behind me. Slow afternoon. After we had paid it took them almost 10 minutes to give us the ice cream. The lady at the window were already packing the meal of the car behind me and when we finally received the ice cream I told her this is very slow, so very professionally she just shrugged at me... I wrote a complaint to kfc but they did not even acknowledge receipt of the complaint, no one could even be bothered to apologise. This must be the level of service we can expect from KFC going forward