As I've already stated--and as is obvious by the amount of players with the same issue--I disagree. Having multiple beta accounts from p3/p4, I feel you had an advantage, tbh. There is a perfectly logical train of thought that leads to creating two service accounts, and that logical train of thought starts with not knowing that a "service account" is an actual second account and not just an additional service: it is conceivable that different services would be considered service accounts. Having bought several Blizzard games and having had no troubles registering games under my account, I also disagree that Battle.net is in any way similar.

Granted, I'm not as angrily screaming at the world as OP, I still feel this is an issue that should be solved, if only because so many players are dealing with it.