My creative cloud subscription ended suddenly after only 6 days or less from my payment

Mahmoud, I am sorry that you are in these circumstances. Please bookmark https://helpx.adobe.com/x-productkb/policy-pricing/customer-support-portal.html for information on how you can review and provide any needed updates to your active support case ADB-29876716-R4D5.

For future viewers of this discussion, I would encourage you to purchase directly through https://www.adobe.com/ if available in your country. If this is not possible, then see https://www.adobe.com/partners/partnerfinders.html to find an authorized reseller that can be used to make your purchases.

How do you know your subscription ended? 

Did you confirm the account is not active from your online account?

https://account.adobe.com/plans

Perhaps you have an acctive acount but are unable to log-in to access it.

1. Open CC Desktop App.
2. Click your Avatar (top right image) > Preferences > General tab > Settings. Select "Always keep Creative Cloud up to date."
3. Click on your Avatar again.
4. Sign-out of Creative Cloud.
5. Close all apps.
6. Restart your computer.
7. Open CC Desktop app.
8. Click your Avatar.
9. Sign-in with your paid ID and password.

Also see this help article:

https://helpx.adobe.com/download-install/kb/cc-sign-in-prompt.html

try a different browser (esp, a mobile phone browser).

if that fails, use twitter.  there are 2 ways to contact adobe; chat and twitter:

chat:
use a browser that allows popups and cookies
and click here, https://helpx.adobe.com/contact.html?rghtup=autoOpen
in the chat field (lower right), type AGENT
be patient, it can take quite a while to reach a human.

twitter:
tweet @AdobeCare

p.s. if you're contacted by anyone (via email or private message), it's much more likely to be a scammer than an adobe representative. ie, double check for an employee badge if contacted in the forums and look for an adobe.com domain in the email address if you click reply to an email. then check again and be very suspicious. any other method of contacting (or offering to contact you) is almost certainly a scam, https://community.adobe.com/t5/using-the-community-discussions/staying-safe-in-the-adobe-support-community/td-p/12919684/redirect_from_archived_page/true