A FlyerTalk Posting Legend
Join Date: Sep 2009
Location: Minneapolis: DL DM charter 2.3MM
Programs: A3*Gold, SPG Plat, HyattDiamond, MarriottPP, LHW exAccess, ICI, Raffles Amb, NW PE MM, TWA Gold MM
Posts: 102,617
Can you call into DL from your cell phone, pretend to be them and make the change, then tell them the new flights? You'd need their password and credit card info if they agree. This might be the easiest way, and you're probably better at finding alternatives and negotiating than they would be.