Update. I received an email from Chris offering to do whatever I wanted to address the situation. I was happy with the response and I appreciate the customer service.
I am now a happy customer.
Glad things worked out for you. This is about expectation management. I certainly understand why Timbernation would assume one finished side would be sufficient for your needs - this is not uncommon with platforms. I made some beautiful white quartersawn oak platforms for my monoblocks. They are finished on 5 sides with only some laquer on the bottom to mitigate moisture absorption. I never considered the need to finish the bottoms.
However, if you expected both sides to be finished I understand your disappointment.
The unfortunate thing here is that you chose to post this publicly with the word "Problems" in the title next to the manufacturer's name, which prompted a few folks to cry foul over a simple miscommunication. Timbernation missed an opportunity for better communication with their initial email response and have paid with bad publicity. Either side here could have avoided the problem by picking up the phone.