When will my payment for the 50G icloud storage end..I have been paying it for one year now which is 49pesos per month. Thank u

iCloud storage is a monthly subscription. As long as you wish to continue using the additional storage, you will pay every month. There is no term limit. You pay every month for as long as you keep using the extra storage.

If you want to downgrade to the free 5GB storage, follow the steps here https://support.apple.com/en-us/HT207594

Before doing so, make sure you don’t need more than the 5GB free storage

Just make sure you don't need/want anything saved, as you may loose what was stored in the Cloud once you go back to the Free 5GB capacity...