I also think there must be something wrong with your game.Or those 2 pokemons.
Have you tested with other trade evolving pokemons(like, Karrablast and Shelment) ? Did those pokemons evolved?
If yes, why don't you try catching Timburr and Roggenrola again? Raise them(just for the test.don't put anything about EVs or other thing in your head.just give them rare candies and don't save the game) and try trading them again?
It this works, the problem lies in your previous 2 pokemons.
If no good,try trading with other friends. If it still doesn't work, try them like above and trade with those new friends again.
If nothing works, there is 90% chance that something is wrong with your game. Try testing with other friends' game cards in your DS. If this work, you should buy another game card or just keep playing without using them. If not, you know what is wrong with this. Your DS. Go and find technician to repair it/them.
(part of the rest 10% consists of using AR. I've never used it before so it might also be the problem.) Edit: For this I just found something, go check here and here.