Forms not subitting from customers.

I beleive that my form is not working properly. im receiving requests but with no information then the email forms.

http://www.spokeculture.com.au/pages/custom-builds

this is the form that i am using. can you shed some light on this issue for me?

I have inspected your website and I was not able to submit your form because Next button is not working. 

I noticed that you are using script code for embedding your form on website. We recommend  using of iFrame code. You can try to replace script code with iFrame to see if the form will work. In this article you can find out how to do it.

http://www.jotform.com/help/148-Getting-the-Form-iFrame-Code 

Hope this will help. Let us know if you need further assistance.