The best restaurants serving Fast food food in Slough South East

I ordered zinger tower burger and waited and I wings. I wire 15 minutes an nothing happened, instead online orders and other customer orders that came after was fulfilled and I was left without any word. I then said to member I will take my refund and leave instead of following through she went on to to another customer and ask them how she could help. I had to stop her and ask her to attend to me first she then said I need to get a manger and she can’t do, I then asked to do that because she went to speak to another customer. Really ba customer service, I was so angry I lost my appetite