Problems with ranking in Google and getting Traffic

Hello,

I officially opened my eCommerce website in August 2012. I then hired an SEO "specialist" who advised us to open a blog and post regularly and share on Social Media regularly, which I have been doing since.

The website is running on opencart and we have been writing unique content and meta-descriptions for products and category pages. We have also done a bit of back-linking from various blogs etc. As far as I am concerned, there is nothing I haven't tried to increase traffic! However, it never seems to increase and we never seem to go up in the search results for a lot of keywords, phrases and products.

We were told back in August 2012 that if we continue how we are, we should expect 1000 visits a day by March 2013. It is now nearly August and we still are on the same numbers of visits per day as we were a good few months ago.

I am just wondering if someone could help shed some light on the website and give their professional opinion on what you think we are doing so wrong?

The site is www(dot)naken(dot)co.uk


Thank you for taking your time to read this,