At least you were able to get some! As soon as they were available for purchase, I went to get myself a pair. Sadly, I also received an error. Checked again and they had been all bought and are now on resale for double to triple the price.
The DC tickets were done through Ticketfly, absolutely no issues. I really hope you can upgrade to the GA tix.
Fuck live nation, Fuck scalpers, fuck the whole industry.
No on the refunds, but some concerts on LiveNation have a seat upgrade option. Check to see if that's an option.