The parcel is still within the normal delivery time limit，However, this buyer has no patience. He hopes that after he orders his purchase, it's better that the next second package will miraculously appear in front of him.
Send a lot of unfriendly messages to harass sellers，Threat complaints and bad reviews
After seller offer Partial refund，he immediately act like feeling happy.
But after he got the package,he still left bad feedback saying shipping very slow,and seller slow down shipping on purpose.
Any one has brain would know that after seller send the package out,the package is not under seller's control .
And according to tracking information,the Parcels are delivered at a perfectly reasonable time by the shipping method he choose

So this guy is clearly use that why to get unfair discount,so he can buy things way more cheaper than he should pay,but after that,he will still bad feedback seller.

So we suggest not to sell anything to him

If you don't have the patience to wait, please do not buy things online
If you wish to receive the package faster, please pay for the express freight at an additional cost or buy it from the seller who offers fast shipping. Please do not choose cheap or free shipping, but hope it can be as fast as expensive shipping.