Lidl complaint: the manager was racist

i went in to your store and spent 87.72 to qualify for buy 6 get 3 free solvieta juices. the juices total came to 38.02 so deducting this from 87.72 leaves 49.70 .the mini spend to get this offer was 49 so the offer should aplly. i asked to see the manager a young women turned up in a dirty overall with a name badge on it from the start she was agressive and even though my wife explained to her in polish whenever i said anything all she could say was speak in polish . whenever i spoke before my wife had time to speak she said to me speak in polish .i has spent enough to qualify for the offer she did not even check .i have been a manager of a large supermarket in the uk and you have serious problems if this is an egxample of your management. i would prefer it if someone phoned me to discuss this further my no is 0048 505322358