You go your Theme Contact form Menu . See Your Email address.
You Can Change Two Red Marked Email . Problem is Over Now.
Contact Page
Go To Now Admin Panel Page Menu.
Pages>>All Pages>Let's Talk ! This is Your Contact Page .
When You go "Let's Talk!" Page. Now You Can See "Let's Talk!" page Right Top of the Corner "Screen Option" Button . Click Here Show Popup Box.
Than Select Excerpt Option
When You Selected "Excerpt Option" Show Excerpt Option Bottom of the page .
Here You can Change Contact Page Header Demo Title.
Notes: It is Similar to Other Page
Thank You !