Biggest letdown since I online purchases

Section:
I purchased this product and am very disappointed. He is much too short. I usually wear M and L have even bought here, yet it is almost navel free. This white cloth is much too long, so you try down this long sleeve T-shirt all the time - so to pull longer. Also sleeves are not particularly long. From the first try on, I pulled to get the sleeves to get a feel, as the sleeves were long enough, but that's not the meaning and purpose. The body not too much of Slim fit cut can be seen. Even this is too short size flutters around the body and looks more like a nightgown. On the back it pulls herself up and not located on the back.

Material:
The material is very thin. It's a T-shirt with long sleeves. And after the first try on the elbow are already bulged. I then got the sleeves still rolled up for about 1 minute and now the cuffs are worn out so that the thing looks more like as a Japanese kimono rumleiert on forearm height 5 cm from the arm.

Processing:
Unfortunately, the sutures dissolve after the first tightening. Under the left shoulder is already a small hole was at delivery. The Kapuzenbändel are cheap and the holes from which they have come frayed.

But I hope that the poor workmanship (defects, errors, etc.) will still have its good side, because I still have the hope that I can return it for free this overpriced piece of cloth and get my money back.
Said hope is fading slowly after the seller does not respond to my emails.