What phone number?
The "Community Feedback (No Product Questions)" space is, as the title suggests, for feedback and issues/assistance with this community platform and NOT for product related questions. I'm not sure what product your "phone number" relates to (I can think of several thousands products that store phone numbers) but it's certainly nothing to do with the community platform.
If you tell us which product you're referring to, I can help find the right product related space and move your question over there for you.
You may also want to consider joining the Getting Started group where you can introduce yourself and learn more about using the community. There's also a link over there to help you change your display name to something more meaningful than a random string of hexadecimal digits... https://community.oracle.com/docs/DOC-889070#jive_content_id_How_can_I_change_my_Display_Name
And take some time to also read through the various FAQs... FAQ