When a customer has a detailed question about how their points have been earned and used, there's currently no way to show them a chronological view of all the activity in their account.

My suggestion: In the Customer Rewards Management Portal, combine the 4 separate Points Logs into one report that would be viewable and sortable like the Items search screen. Or, just an exportable/printable report that would show all transactions in chronological order, with a column for the running balance.