I've been making part payments to Tesla each day, due to limits on daily transfers from my account. They were showing on my Tesla account just fine, but interestingly, one of my payments is now showing twice, so Tesla currently think I owe them £20k less than I actually do.
While I'd love to get the car for £20k less, I'll pay them the full amount and potentially have it showing as an overpayment, as I'm sure they'll notice.
Unless of course someone has kindly transferred £20k to Tesla and used my RN instead of theirs?