A Clash of Cultures and Values
I have read a fair number of reviews about DHgate. Many of them have a similar theme--folks start out buying small items and then move on to a bigger item where things go bad. My experience with DHgate was exactly that. When it really matters, DHgate is not supportive or responsive. It is not a part of their corporate culture to deal with anything negative they just ignore it, and that includes your emails and messages.
If this Chinese company wants to do business with the rest of the world, they need to integrate honesty and integrity into their corporate culture. Until that happens, I would stay away from DHgate or plan on being disappointed.