Pull colors from the rug for accessories.

It included a Google Voice phone number, and the scammer answered calls pretending to be me, using my real name.

Good or if there any red flags?

It's expected and common for MTRs to have utilities included.

We typically pay somewhere in the range of $3500 for a new, basic furnance, including install, if there are no other modifications to the system required. 

Is an estimate with no cost breakdown a red flag?

Hey Tyler we hate to hear that your experience was negative sincerely we would have hoped that we could have come to a resolution we know that you and your partner had made a request that we do $800 of work that was unfortunately not in your scope of work at the time we had exhausted $4900 in additional work to ensure the property was to satisfaction which included a new hood range upgraded lvp flooring additional framing  new window and a paint upgrade from a single color format to a multi color format and can lighting all of which was never in the original scope and unfortunately when we requested that we do the work you declined I’ve attached before and after videos of the home for reference https://www.dropbox.com/scl/fi/h0ddll4cyp5g5gq12o73s/Video-J... always twos sides to these stories.. 

The algorithm likes bright/colorful photos. 

Checkout my YT video, it'll provide more color. 

I provide short term rental furnishing and renovation finish list that includes paint colors, light fixtures, cabinets etc.