I am currently trying to log into my minecraft account (KurokoTetsuya) but it simply wont let me, it keeps saying incorrect password and stuff.

Just five minutes ago I had logged into the account with the same information I had use then. And don't tell me "oh well maybe you got it wrong." Trust me, it's the same information. I've tried many times.

I've attempted the Change password thing and put my email in. But it just won't send me the email.

So I attempted to change email with the security questions, this time I received an email, but everytime I go onto the given link in the email, it just says:
An error occurred. Could not load security challenge.

What can I do to fix this, I'm not sure if I feel like calling up "Mojang Support" with this because I have a feeling they aren't doing much.