Can't log into iCloud.com because I can't access my @mac.com email to verify.

I'm trying to log into iCloud.com but I can't, because my account –which was created with an @mac.com address– can't be accessed unless I verify that @mac.com address, which is impossible because they send me the verification code to that SAME ADDRESS, which I can't access! And they're not giving me any other options; I can't verify the iCloud account with another email (which makes sense), or with my phone, or anything.

PLEASE someone help, since apparently Apple's support only extends to first-world, english-speaking countries or something.