Terrible company

I registered on the site and received an email offering me a discount code as a new buyer. Upon entering the code I get told that the items in my basket does not qualify for the discount. Nowhere on the email does it state that it is only for certain items. There is also a buy now link to buy 50 drinks. When pressing the link their site states that link not found. I emailing them a few days and got no reply. What kind of amateur company is this?