One quick tip for buying on the LA (or anywhere), I always snag the auction picture when I win a plant (or from the web site when I buy one elsewhere) This goes in my archive and is only used to ID the plant when it blooms. If I ever do post that photo, it is always clearly identified as "seller's auction photo".
I have on occasion bought a plant that was not true to name. Every time I have contacted the seller they have made every effort to correct the problem.
To OP, I feel your pain. I have a beautiful flower that I received as a bonus. The seller said that they were going to register it as 'Phoenix Sunrise', but so far it has not been done. I received it in 2009.