Add a Facebook, change the email twice, change the password twice, add a phone number. Or you could swap the @, but you would have to worry about getting turboed if you swap.
You're not getting jacked, the people selling you the @'s are pulling them back, which is scamming. I understand you're wary to swap now after the turbo as well. I highly suggest not buying random Semis off non-trusted people.
I feel you brother, ive tried all securing methods, facebook, changing shit 3-4 times and accounts have still gotten pulled back, even with a mm too lol if your buying it from a sketchy person using a turbo and swapping it would be the best bet. Not right after though because of course they would be waiting.