There are email addresses for a number of CX offices on the CX website contact page. Most are for baggage services, but some also include ticketing/sales. Biggest issue (that wasn't passport renewal related) was their confusing IAH for IAD and claiming it was a second transcon from LAX. Quickly sorted once I pointed it out.

My last experience with the AA RTW desk was when the rules still allowed for tickets issued in Canada at the departure country price (in my case a YYZ issued, ex-ICN, KRW fared, CAD priced, DONE3). They tried to charge me for an AONE3 instead of a DONE3.