Hi all, new to mile point (lurker) but not the miles game. I need some award ticket booking advice and hope you all can help. I have a ticket booked to South America for late March 2015, flying from New York to Santiago, used Avios to book on LAN. I want to fly back on April 5 out of either Buenos Aires, São Paulo or Rio de Janeiro ideally. I've got so many Avios I need to use them, so I'm looking to fly LAN or TAM back as well and can fly back to New York, Miami, or even Houston. On the BA site I see tons of availability, but I think it's all phantom because I get an error at the very end of booking, after I've put in all my CC info. The message tells me to call BA but the line is always busy or an hour wait! Any advice or thoughts? I tried checking on Qantas but I keep getting an error that some routes are not valid when I know they are! (Like Eze-JFK). Any help would be greatly appreciated! Thanks!