i got the same problem... challenged a user that was never avaible to play than one day saw on my "challenges and results"
5-0 to him and we didnt duel... Baraknur unfortunantly there is nothing to rage since they are just group of nuubs not even able so fix few rules and their website so image if they should be able to solve a problem like our.. already loling.
hope for a fast upgrade on ingame d3 pvp so finally this shamed website and shamed nobrained people will finish with this bullshit.