bad service and incomplete order

we bought kfc last night 13/10/2015 till slip order no 934 it is a family 10 piece. and extra mini loaf and coleslaw and mash. when we arrived home to dish up only to find the did not pack the extra I phoned immidately but now I already dished the meat and chips for the kids and when I search for the loaf - it was no where to be found. any way I phoned asked to speak to the manager I told her what must I do now. my food is gonna get cold if I have to drive all the way back for just the mini loaf so she said if I can. so when I arrived there they offered me something extra ( to drink) only for me... hello I just bought a family meal??? is this the type of service we pay for? I wasted petrol going there 32 time. we finished our food without the loaf... otherwise it would be cold? and now what must I do with the mini loaf... pathetic servise I am utterly dissapointed