Why is my storage full if I bought 200GB i want my money back if it ain’t gone work

My guess is that the warning you are seeing is that your iPhone storage is full, not iCloud. You cannot buy more storage for the iPhone. It is fixed storage when you purchase the phone. iCloud is not a storage area, it is a syncing service and is used for things you sync to the iPhone. See this for an explanation of the two. What's the difference between device storage and iCloud storage? - Apple Support

I would like you to realize and know one important thing and that is that there is NOTHING that you can do to increase the physical storage capacity of your iPhone. Your iPhone's storage capacity will forever remain the same as the day you bought it.

You can purchase ➔ iCloud Storage from Apple where you create and save your iPhone backups and synch (Not Store) your Messages, Photos, Contacts, Calendars, Notes and Reminders. Note that iCloud Storage is NOT an extension of storage capacity of your iPhone. Just wanted you to know some facts.

Having said that, you can choose to Optimize Storage on your iPhone for all the Photos. What this action will do is store your original quality photos on iCloud and a small size photo on your iPhone. This takes up less space on your iPhone while maintaining the actual size on iCloud. This will free up space on your iPhone while making good use of iCloud. If you would like to try this then open Settings ➔Photos ➔ Optimize iPhone Storage : Ensure that this option is chosen and has a checkmark on it.

Axel F.