Founder of StartupSwat.com and Mikaniki.com, failed and learned, passionate about helping startups in areas of the actual implementation of ideas, Operation, Customer Service, Customer acquisition, you get it, the non-tech part.
Have you showed investors "whats in it for them?"
A direct answer to your question is not possible as there might be many reasons on why you didnt get a response. Funding is not an easy process and it will take a lot of your time.
* You will need to understand what investors look for and what encourages them to invest.
* How did you demonstrate your idea? how good is your pitch?
* Do you have a business model? a plan?
These are some of the questions that you will need to think about before even approaching investors.
As for you getting help building your product, at this stage may be bringing in a tech co-founder can be a good and cost-effective idea.