Before you launch your website and start advertising, make sure that you ALWAYS make it easy to allow someone to contact you. Nobody likes a Contact page that requires 50 questions to be filled out just to reach a human.

Don't beat around the bush with a bunch of dropdowns, like:
What method of communication do you prefer? (Email, Phone, Snail Mail)
What day of the week is best for you? (Sunday-Saturday listed)
What time of day is best to reach you? (Morning, Afternoon, Evening)

Instead, ask them directly what you want.
Here's a great example of what you should ask:
When and how would you like to be contacted?

Then leave room for them to say "Call me after 5pm", "Email me", or "Mail me a membership packet".

Let them just tell you what they want, and the both of you will be happy.