Bike-discount Dura-Ace crank irritating issue

Following below comments, I edit the post.
Thanks for your feedback already.
I just had a bad experience with http://www.bike-discount.de.
Placed an order on Sept.-11 for "Shimano Dura Ace FC-R9100 2x11-speed Crank 50/34 170 mm".
The good arrived Thursday Sept.-20 but was damaged (see picture below). I immediately reported the damaged good via email and sent several emails yesterday and today to follow-up. No answers at all.
What should I do?
Thanks for your feedback already.
I just had a bad experience with http://www.bike-discount.de.
Placed an order on Sept.-11 for "Shimano Dura Ace FC-R9100 2x11-speed Crank 50/34 170 mm".
The good arrived Thursday Sept.-20 but was damaged (see picture below). I immediately reported the damaged good via email and sent several emails yesterday and today to follow-up. No answers at all.
What should I do?

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I've had nothing but good service from them tbh, including when I had to RMA a brand new Reverb due to faulty seals. Had a new one back within 10 days and they covered all postage.
Anyway, try calling them on +49 2225 88880 or send them a message on Twitter (I don't use it myself, but I know it can be a good way to get a response from a company).
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Get a grip.
I'm sure it's going to get worse treatment out on the road. A ding is annoying but you've gone a bit primadonna here.
Try ringing them or just send it back for your money back.
Alterntively - dab the spot with a black sharpie and ride on.
If you can't cope with such a huge disappointment go into a local bricks and mortar shop and buy what you want, that way you can see and examine the goods before parting with your hard earned. Presumably you did a mail order from a website to save some money, that's the chance you take. It normally works but sometimes there are little inconveniences.
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noun
a sudden accident or a natural catastrophe that causes great damage or loss of life.
A tiny nick on a new chainset is hardly disastrous.
Probably quite disappointing if you're wanting cosmetically perfect components and you've just paid a small fortune, but it's not a disaster.
If it was mine I'd be fitting it and expecting that tiny mark to be joined by a few more in the course of riding about.
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