Hi
Great effort, particularly if this is your first site. Although as you are an established business, might be worth getting a professional involved. Find someone locally that you can have a chat with, even if you just pay them a small amount for general advice.
The most obvious technical issue is that your whole site has two different versions and your home page returns for four different URLs
http://www.
http://
http://www........../index.html
http://..........index.html
Just as importantly, a deal of work is needed on content. Apart from more information and background on the product, the existing content needs to be more attractive/informative for both visitors and search engines.
You might also think a little about presentation. Look at a few professional sites and consider aspects such as text layout/size/font. Think where you could use images to enhance the visitor experience. Concentrate more on benefits you are offering and add to these with calls to action. Essentially, do a little more to make visitors get their plastic out of the wallet, that's what the site is for.
Incidentally, I would take the bank account details off the site pretty quickly.
Good luck with your business.