Following unprecedented demand for discounted goods, a recent sale on Missguided‘s website resulted in a crash and a storm of unhappy shoppers.

The Manchester-based pureplay, aimed at 20somethings, left customers increasingly frustrated when the site struggled to manage the increased volume of users looking to take advantage of 50% off on selected products.

In response to its technical difficulties, the site read: “Oh hey, it’s a full house at the moment due to overwhelming demand. Keep trying and we’ll have room for you soon.”

“Soon” didn’t appear to be the case, with customers tweeting the fast fashion e-tailer with complaints such as: “Six hours of not being able to put anything in my bag, regardless of being able to actually get onto the site. Pretty unacceptable,” Soph said on Twitter.

@Missguided if you do an offer, make sure your website can handle it. Just seems stupid. This is why I don’t shop with you often. Chaotic” another customer tweeted.

In response Missguided said: “We’re working hard to get our site back up and running ASAP, and don’t fret – we’ll be extending the offer!”

The Chief Executive and Founder of Missguided, Nitin Passi, recently told This Is Money that he wanted to expand even further overseas.

“Our kind of growth is something most retailers would be happy with. But to be honest, I‘m not happy with it. We have some aggressive plans and targets in place for this year.”