Disgusting service towards non muslim customers

Upon arrival, we were only entitled to a take away, yet there were other muslim families being seated & served, we refused take away & were thus allowed to serve.Plates had grime on it, we used the side plates, We were served a milkshake that was warm, we sent it back, only to realise at the end it was sent back with ice cubes, warm milkshake its questionable on its own & also, the full qty of food was not served. It was late & we didnt want to make a fuss about it.I did however take the milkshake, almost finished back to the owner/staff & said" i dont want another milkshake, but icecube in a milkshake is not acceptable, please dont do that again". The apparent owner brought back another take away milkshake & said "take this & go" in a loud & harsh manner. I was firm & said "dont scream at me Im your customer", and this is a shocker, The man came right up to my face to fight me. This is not the first time a non muslim has been treated in this way.Cmon guys, we all people. Service is putrid & hygiene is not always a priority.