Hobbies Discount They did not deliver the goods i ordered and not replying my emails since then. Internet

I ordered goods from this Merchant and here is their confirmation on the order:

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Thank you for placing your order with Hobbies Discount!

This email is to confirm your recent order.
  Date 12/03/2016
  Shipping address
xxxxxxxx
  Billing address
xxxxxxxx

1x High Powered Waterproof Night Vision Binoculars for Hunting, Bird Watching, Navigation or Simply Enjoying Nature for $39.96 each
1x 360° Ultra HD 4k Panoramic Camera w/ Built in Wi-Fi - Black for $139.95 each
Subtotal  : $179.91 USD
Shipping  : $9.95 USD
Total     : $189.86 USD

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They promissed me the delivery will be in within 4 weeks. 

And this is email update on delivery they said :

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From: Hobbies Discount Team <info@hobbiesdiscount.net>
Date: Tue, Dec 6, 2016 at 9:05 PM
Subject: