Vermont Plank Flooring

We placed an order with Vermont Plank Flooring in June for 400 sq ft of eastern white pine flooring. We received it in January. They were having issues with their finishing vendor. They switched to a production team in-house before our floor was completed. The quality of the finish we received seems rushed and is sub-par. Our wood floor installer with 20+ years of experience in the industry was greatly disappointed by the finish quality, and it led to many issues upon install. The floor was not properly sealed. He said a pine floor should have at least 3 coats of finish minimum, and that is a gold standard. We need to have another coat of finish applied to the floor to ensure its stability. We have relayed this information to Vermont Plank Flooring and have requested to be refunded for $700 to cover adding an additional coat of finish. They responded and said that they are unable to refund us because to achieve the look we approved there are 2 coats of stain, and it's sealed with 2 coats of finish. This is where I have an issue. We did not receive in writing on our final invoice, any email communications, or on the samples we received that this was what was being applied to our floors. The detailed stain/finish information that was applied to the samples was absent. It only showed the type of sheen and stain color. (see photo of approved sample) Because I don't have what was applied to my floor in writing anywhere, I don't know if the finish was botched during their finish team transition or the finish information I was given is false. To reiterate, I don't have any written record of what was applied to the sample I approved. With no evidence of this information, the sample could have had a different finish, and the company could have put whatever they wanted on my floor. Ultimately, our professional installer confirmed that the finish quality we received is considered unacceptable in the industry. That is why I am seeking a refund to have another coat of finish applied.