ABSA Admin of British Airways Credit Card

I’ve either misplaced or deleted my credit card statement. The BA online service want to know my: • Full Name • Card No • ID • Date of Birth • email That’s not enough to identify me and just send another copy of the credit by email. Nope’ they want to ask me five security questions. I can only ever remember providing ‘their correct’ answers to these questions on one occasion. I know I answer the questions properly but, I can guarantee failure. So it’s off to the branch to get the account ‘unblocked’ again. All this just to get BA to resend the statement, which, initially they do automatically. I need help to understand.