You have several issues going on. The one that addresses your issue most directly is that you do not have a description meta-tag or much content (at least on the home page) and Google is choosing to create your snippet from what it can find which is your first h1 tag and contact information.
You are missing much of the basics in SEO. Here are some links to answers I have written that should help. Please ignore the title of the link and read these answers. There is some overlap in these answers, but read through them anyway- there are little nuggets hidden in these. It will help you to understand what you need to know.
The headline read order:
SEO on Single Page Website and Content keywords
The importance of title tag length:
Title in Google does not match <title> of document
Title tag effect on SERPs:
Title tag different from title appearing in Google?
More on title tag effect on SERPs:
My title tag doesn't appear to be getting crawled by Google properly
More on the headline read order:
Improve Google ranking for general vs. specific keywords
Semantics in search:
Why would a website with keyword stuffing rank higher than one without in google search results?
How URL/URIs effect search:
Well structured URLs vs. URLs optimized for SEO
How semantics effects a link:
Keyword phrases and links
Where to put contact info:
Should Schema.org Organization data about my company be on every page?
Are bad links toxic?
What is a toxic link?
How semantics effects search:
Can writing a floating navbar's HTML at the bottom of the page increase SEO?
Pipes in title tag:
Site URL being displayed before TITLE on SERP
Okay. That is a lot of reading! Sorry. But these are as many answers I could find quickly that would help you to truly understand SEO and get you started and be jazzed about SEO (if there is such as thing).