It looks like Hygge is just one more seller that is friendly and supportive when they want to sell you something, but the opposite when you need them to fix a problem.
Congratulation, you discovered a typical seller/brand that sells very cheap products.
They (and many others) sell a frameset, sometimes with a handlebar, for 450-550USD, it's 3-5 times cheaper than cheapest options from a big brands. And for me it's strange to expect, that they want to spend 50-100USD to replace handlebar with bad paintjob. With these cheap chinese frames you just play roulette, with high risk, high reward.
And about handlebar, I suggest you or forget about it, or start to write them on social networks, aliexpress chat, mail etc. This might lasts weeks. If you still can - open aliexpress dispute.