KFC review: branch manager misbehaving with customer

The branch manager of dha phase 5 misbehaved a lot and argued. He was rude and insisting that he is the only authority of this branch But I was requesting just change one chicken piece instead of other
He just said I am telling u it can't be changed
Then I said cancel my order and I left
I need very urgent reply of this misbehaving

And I am going to mail this to intl head office of Kfc as well
Regards