Here are some tips to consider to improve conversion on your landing page.
Consider spelling out the process above your form. More than just a ‘Fill out this form to be contacted’, I am talking here about giving the potential client an expectancy as to what is going to happen. The more specific the better. That way rather than the person not really seeing why the form should be filled out they actually know that you will be calling within 12 hours, for example, to discuss x, y and z.
Consider repeating your phone number or other desired call to action more than once. Sometimes a call is on an impulse and you may want that in front of them several times in the reading or browsing process.