I was sold an already claimed WoW Dragonflight beta key

I had to link another beta key thread of theirs since MMOPlayStore did not post the WoW Dragonflight beta keys here, but instead I bought them from directly from their site, MMOPlayStore.com
I've tried numerous times to reach out to them about this matter in private, so don't blame me for going public now.... I even had Blizzard support comfirm that it had already been claimed, and I can post that convo with Blizzard if needed.