As you mention above you are getting clicks but no conversion. I will mention few points here which will help you to get solution from it:
1.You have to understand the search intent as people visit google for specific thing.
2.In google adwords extension play an important role so you have to use each and every extension which will describe your business more easily.
3.Your ad copy is not relevant to the user search query or user is not able to find any thing useful for him.