Incorrect Order

I ordered a spicy Cajun burger only to find out that I received a chicken cheese burger and nothing spicy about it however it was packaged in the spicy Cajun box and if I remember correctly the lady said R31.50 and my husband gave her R32.00 the sneaky lady decides she will keep the 50c I thought wow at first and then I just left it. When I got to work and opened the box that’s when I got furious which resulted in this post. Now this Mc Donalds in Kyalami corner is new and they are messing orders which will not be good for future business. Not on and will not see me back