i Cloud
I have purchased monthly payment for i cloud storage but and i thought that I am able to share this storage with my family, have set up family share but my wife still not able to use that storage on her i phone?
iCloud Storage is not part of Family Sharing. http://www.apple.com/icloud/family-sharing/
If you want to stop the icloud storage upgrade from renewing, see the following for instructions on how to downgrade to the 5GB free level: iCloud storage upgrades and downgrades - Apple Support