Q: i-cloud payment history

Check iTunes Purchases I think.

I've wasted too much time trying to find the icloud storage payment history.  It is nowhere!  Apple, how about some help?

Apple doesn’t routinely monitor the discussions. These are mostly user to user discussions.

Send Apple feedback. They won't answer, but at least will know there is a problem or a suggestion for improvement. If enough people send feedback, it may get the problem/suggested change solved sooner.

Feedback

See the link below.

iCloud storage upgrades and downgrades

Thank you Eric.  I did just that.

You are welcome.