I was planning on buying a new copy of Minecraft with the same email, so I changed the email from my old account, as well as my profile name. But when I went to create a new account it said there was already an account with the email. So I chose a different email, but when I inserted my profile name, it said it was unavailable. Then, I deactivated the old account to see if that was the issue. It wasn't, it still didn't work.
If it's relevant to fixing the issue, my current profile name for my disabled account is old_acc, while it was previously Tidester. I want to use my email and name but it won't allow it because it was used in my previous account.