You might be of the opinion that complaining won't resolve anything, but it's time to think again.
If you have an issue with something you've bought, a meal you've eaten or a a ticket you've purchased it's always worthwhile contacting the people responsible.
gocompare.com did some research and are they're saying that people on average receive about £30 for complaining via Social Media and some have received over £470.
As nice as that sounds, they're also saying that only about 15% of people use social media to complain about, you know, United Airlines being rude or finding an insect in your food.
Of that 15%, women are said to get their complaints sorted more than men, but men still get more money, discounts or gifts than women with £40, compared to about £25 for women.
If you are going to make a complaint online then make sure you use the brand's official page or handle.
Always stay calm, don't swear and don't put out any personal information out there.
Most importantly; don't give up, hopefully you're complaining for a good reason.