The description of your aircraft incidents are incomplete and devoid of a considerable amount of information, preventing anyone from either assessing the events or to enable supporting your cause.
In review of your written communications with Yuneec there is an appearance some may not have been included in your post. It's reasonable to think the tone of your replies required a few more conversations than provided here to establish.
How we talk to people directly controls how they will respond and treat us. If I was seeking help or assistance I would certainly not use the tone and disrespect you did in your written conversations. There was no indication of a language barrier that could cause misunderstanding, your intent was clear. If your voice conversations carried the same tone I would be surprised you have received any help at all.
To my knowledge Yuneec USA has rarely, if ever, provided customer repair service to independent customers in countries south of the United States, so the shipping expenses you have experienced are not unusual. As we can buy anything from anywhere over the internet we have to recognize there will be service and support difficulties because of our location relative to a supplier. Because of that there will be times we will need to find alternative methods.
You might try using the customer service chat feature to try again using a little humility in your following conversations. Temper tantrums will accomplish nothing positive. Accept that although Yuneec USA is in the USA, the people working there have to follow policies and procedures established by the Chinese home office. The employees of Yuneec USA cannot deviate from those policies and remain employed.[/QUOTE