Aggressive Behaviour

I ordered a watermelon McFizz which seemed a little less in quantity than usual seeing as i have one almost everyday on my way home. I mentioned this to Julie in a calm non confrontational manner knowing that McDonald's staff is usually amenable to this in reasonable circumstances. She then responded in a condescending and very confrontational tone that she did not know what I was talking about. The incident then escalated into a row that I admittedly participated in. However it did not need to, seeing as the request was not personal in nature... any response could have been welcomed but the tone and manner was entirely antogonistic ol in nature. A calm and polite attitude goes a long way when dealing with customers. And this lady clearly lacks this attitude. I suggest you remove her from such a front facing position. The icing on the cake is the fact that I couldn't call the manager seeing as she is a floor supervisor. Please discourage this behaviour.