Had a the same kind of experience in 2009. My dad and I took our two antelope bucks to the taxi and when we picked them up the capes were switched. Kinda pissed me off! My buck had the better cape but I guess I can always go over to my dads house to look at it when I want. I now have a new taxi.
My cousin in CA took 2 blacktails in at the same time for him and his grandpa once and they got the capes switched too (I think it was west coast taxidermy in san bruno). Kinda makes ya wonder how many get switched and no one notices...... I really like my taxi and the work he does and I have no intention of switching. Im just a bit irritated with him at the moment.