There should be no reason why the AOA shall ignore the situation, not return phone calls or not respond to e-mails. THIS IS WHY I PAY MY DUES - TO HAVE REPRESENTATION, NOT TO BE IGNORED.
However, getting back to the aforementioned subject, Yeager, if your license as a S/O has not expired then Crew Control have the authority to use you as as an operating crew member as an S/O.
The second issue, whether they can use you on a G day and use the excuse as Training, now that's incorrect. If the duty is as an S/O, there's no training, it's a normal line flight. Then it's basically a request to operate on a G day and as such, should you agree, you are entitled to G day compensation.