Who is your real estate agent, broker, partner or person you team with?  

(Investigate the presence of Fortune 100 companies and industry diversity, using resources like metropolitan council reports and broker websites (e.g., CBRE, Colliers).)Affordability: Ensure household income has grown at least 1% YoY for the past 20 years.

But maybe their connections get too many JOBs, they don't cares about their clients.4.FlipSystem is basically MLM company, they use Fake exaggerated advertisement to lure new customers in, asking new customer to sign disclosure with them so they don't have any liabilities to their advertisement, then what they providing is their connections from Agent to Contractor and they charge you more on these things!

@Peter TrifanI would reach out to as many brokers and property management companies in your market for recommendations.

Should I get in touch with brokerage firm(Broker) about the agent's handling of this? 

Just work with a mortgage broker. 

Do you have any mortgage broker recommendations in Dallas, Tx (or surrounding areas).Would affect if I am not USA citizen, but an employment based resident?

It was through a local broker who brought it to me off-market after he knew what types of deals we were looking for.

Their attorney gave the broker a projection of fees for going to court which exceeded 70K!

Since you are in NC, historically I would think a simple broker's option contract would work.