It's quite often the case that things that seem braindead just don't matter. That is, if this practice blocks a lot of illegitimate accounts, then the only pers

It's quite often the case that things that seem braindead just don't matter. That is, if this practice blocks a lot of illegitimate accounts, then the only person who cares that it happens to block yours too is you. I'm not defending the practice, I'm just saying there's no money in accommodating edge cases. Nearly every complaint about crappy customer service ignores that large companies don't have much incentive to improve at the margins.