very poor and slow service

Last night I went to make a purchase at Kfc in fynnland , Bluff that recently opened. I usually go through the drive thru but due to the slowness decided to do the purchase inside, I stood by the tills for 7-10min waiting for assistance, there was no cashier, there was only one lady assisiting the drive thru people, she shouting for a cashier atleast 4 times before someone came, my cashier came chewing food and i saw him standing by the ovens pretending not to the person calling him and he overcharged me R2 for requesting extra oreo in my krusher, claiming the system is not updated to reflect the top up cost for the krusher until one of the staff members overheard and said that there is no such thing.. It is very dissapointing to receive such bad service at a newly opened branch!