Dear CO Insider,
Apologies for contacting you directly this way, but I need some help

I am a *A Gold with UK home.
Back in May 2010, during the ash cloud misery, I stepped back from a flight to allow a small family to get seats on the last flight home. Have been credited with two small value electronic travel certificates (instead of one for the entire amount due to a typo of the gate agent). Luckily, I managed to redeem one already as I figured that one can only redeem ONE certificate at a time via the web, AND flights have to be ALL CO OPERATED and not code-shared, as otherwise no redemption option appears at the payment page.
T&C No.8 states "...and with respect to redemption certain continental selected code-share flights." - For which code-share flights can I redeem the certificate? There is no info to find on this. Customer Services and Online Helpdesk both have waiting times of more than 30 mins, and 'expert Alex' is useless in this respect.
If not for a flight, because you also do not offer any viable option for transport to chosen destination (SFO or SMF) compared to other *A members with regard to total travel time, stopover time and price, what else can I do with the voucher?
Thanks in advance for your reply.
Sincerely