Service ridiculous

So. My deal with KFC at Stanford square. I never did the online app but I did it and my order went through, got an email and SMS saying I must let them know 2min before pick up. My husband went, first they couldn't find my order after that they don't have containers for the mash and gravy. Ok, he got home without the coke. So now, I went back I asked for the supervisor or manager, a lady came and helped. What ****ed me off whilst I was at home and my husband there, the person on the phone put me on hold. Anyways, they didn't have the 1.25 coke zero so she helped and gave a 1l and 440ml. Then I told her that I got 3 mash and gravy one was supposed to be coleslaw. The person that helped my husband, funny enough but the mash and gravy in those cold drink cups. The same the supervisor did with the coleslaw, she could see I was upset and gave 4 small tiny pieces of wings for compensation. Maybe because we had to go all the way back for the coke and the exchange of the one mash and gravy. The service was bad the way my husband explained to me when he got there waiting 20 min. I don't know if they think 4 zinger tiny zinger wings will make me ever buy there again, they should be embarrassed. The reason for the 2 stars was I think the cashier who helped my husband went out of her way.