I waited 5 days and called back. The "no LOS" block is still on my account and nobody can clear it. Today I spoke to somebody in Cape Town who claimed that she couldn't tell me who put the block on my account but that that person would have to take it off again. Seems plausible but I think the tech who originally wanted to mount the dish on the east side of my house and came with an 18" mast is the culpable party. Why oh why doesn't Dish have somebody capable of removing the block?
I think I'll give them an "Apt. 0" next time I call and see if they can work that angle. But I'm afraid they'll again schedule the same tech who obviously can't read his own compass. He also told me that 72 was the farthest east, which is true for the LNB but not for the LOS. That tech is an embarrassment to ViaSat and to Dish.