My suggestion, which I’ve been able to use with a previous bank is after making a payment to a friend/contact - there should be an option to share a PDF copy of the payment you’ve made. This includes who the payment came from, who it went to and the amount. You can then share this via iMessage/WhatsApp/Email.
Would a screenshot not do? Saves them building back end capabilities for this to happen. It’s not like there’s a payment reference or anything other than what you’ve entered.