If your Lamsa subscription was made through mobile credit from OOredoo - Algeria, and you with to unsubscribe, please follow the step:
1- Click on this link.
2- Fill your Lamsa account credentials (Email address or Mobile number and Password) in the fields provided. and then tap "إلغاء الاشتراك" button.
3- Tap "إلغاء الاشتراك" from the page appeared automatically.
4- Your subscription will now be cancelled successfully if the credentials match.
*You will still be able to enjoy your premium account until the end of the period you paid for.