I suggest suing them for misleading, for stating a false clause in the contract.
Next time they will know better than to write clearly contradicting clauses.
The folio had 24 pages, but they had only 23 pages of information to report. Some readers would probably have thought that the empty page had been left blank by mistake, so they put that statement on the page. I’ll bet the company’s operators had received thousands of calls in previous years from people who thought they’d received an incomplete report. Therefore they have to put that oxymoronic statement on the page.