I would say holding a ticket for 2 weeks is going too far, regardless of contact centre. Depending somewhat on the details, this goes way over the usual margins for this sort of thing and you would be better off dealing with an in person travel agent if this was an ongoing requirement. I would suggest checking the refund arrangements on the itinerary, and/or researching the fare basis to see if paying a little more would give you a ticket with low charges for refunds, or more plausibily a reasonable set of conditions for rebooking to another date.