That is incorrect information. What they cannot do is assign (ie: schedule) in advance (like b4 you sign in for a trip) anything that violates a golden day. However, once you are out on the trip, they can reroute you into a golden day. The only compensation is 9 hours free of duty and then a payback day. There is no financial duty on the company.

I will tell you that in my many years on reserve, I was never scheduled into an X or Golden day. I know it is very rare and I think the company does all it can to protect you on those days. However, this is the airline biz and they have to 'keep that jet movin!'. Sorry that it happened to you, however I think people in any business are tasked sometimes with working on a day off. At least you get a comp day out of. Most companies say 'too bad'.