1. Surely, you should file a complaint. Don't use e-mail or fax though. Send a letter and address it to UA's CEO. Thus, your letter will be processed more carefully, compared with average complaints. If you are a frequent flyer, your chance would be even better. And you may send multiple letters in the next few months. Feel free to use some strong words (not bad words though).
2. Don't use the word "waiter" or "waitress" because they are "flight attendents". Be careful here. And you probably want to fine tune your English.
3. Don't worry about evidence. For this kind of matter and especially for the first complaint letter, the airlines just assume that it be true.
As others pointed out, you should have tried to have the issue addressed when you were aboard. You may talk to the lead flight attendent. But it's too late now. So, good luck.
2. Don't use the word "waiter" or "waitress" because they are "flight attendents". Be careful here. And you probably want to fine tune your English.
3. Don't worry about evidence. For this kind of matter and especially for the first complaint letter, the airlines just assume that it be true.
As others pointed out, you should have tried to have the issue addressed when you were aboard. You may talk to the lead flight attendent. But it's too late now. So, good luck.
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