I tried already twice to enroll to the developer program and I'm stuck again at the same point after receiving an email from Apple program stating: "Please note that we still need the documentation we requested two weeks ago in an email titled “Request for Enrollment Documents”." Except I've never received such an email and I don't know which documents I should upload. I tried to contact by mail or phone the assistance but I never managed to succeed in having a response. Thanks

It's months that I try to enroll to the developer program... They write me that they need more documents but they don't say which ones! If I write back they don't answer. If I try to contact support: The call me back option doesn't accept any number mobile or landline and the error message refers to wrong email instead of number: "This email address isn't valid. To update your email address, visit appleid.apple.com." The email form has the right email address but if I clic send it kind of stuck there, I don't receive replys nor confirmation of delivery. How can I contact support?