OK, I didn't want to say anything right away, because I'm worried they're going to change their minds yet again, but my D.S. is awesome and kept looking into it without me prompting further, and he was able to get me the doubled referral bonus as well. He notified me of this earlier this week.
I have been told that it wasn't possible in some form or another at least 3 times so far, from 2 different people. I have also been told it is possible from 2 different people!
I was polite the whole time, and I let it go after the bit of a fiasco a week ago. He just went above-and-beyond to ask around, and was able to get the discount applied. I have it listed on my final MVPA, and it's showing up in the My Tesla section. Great timing, too, since it looks like I will be getting my MS scheduled to be delivered next Thursday!
Honestly, I'm still nervous posting this, like they might take it away again! :crying: