Originally Posted by
UKtravelbear
You are getting pushback because until the day of your flight only Expedia can make any changes such as upgrades - the ticket belongs to them and DL and VS don't have access to it.
Which airline is your flight actually ticketed with ?
Hmm okay I will try contacting them again. The flights were booked through Expedia and according to the email are both Delta flights, but the first flight to London is "Delta #### operated by Virgin Atlantic"