KFC review: service

I went to the drive thru where I ordered 3 of the 5 dollar fillup meals then when the lady in the window gave me the total I thought she said 36 dollars so I was wandering why so much anyways I gave her 2 twenty dollar bills but all the change she gave me back was for one 20 when I got home I realized the mistake and I called the store all I got was an answering machine so I left a message and phone number to call me back but I never heard a thing from them