I know you ate up your one time thing, but if you mess up again, you don't have to do roulettes or dungeons to get them. You could have just spent less than 2 hrs in PoTD 51-60 to get all of them back, as long as you bring a 70 in there.
SE won't do anything that has to do with giving back any tomestones. I originally tried contacting customer support ages ago when i70/i90 were the things to farm for, and got a pretty pre-typed post saying it was, in short, my fault and I need to pay attention.