Recently, I was aboard a Singapore airlines flight. While booking the ticket I confirmed that food and beverages - alcohol and non alcohol - are included in the airfare. And that I was liberty to drink as much as I'd want.
However, when I requested the flight attendants for a drink (whisky), I was repeatedly ignored. There was no seat belt sign on and neither was food being served. Finally, when someone was able to get me a drink, I asked them to serve me two as they were taking a long time - this was straight out denied as they have a policy (which I couldn't look up anywhere) of only one drink at a time. This seems like a clear case of me being denied of service I was promised.
What options do I have if I don't get served alcoholic beverages on a full service flight ?
Edit : I wasn't drunk or belligerent. I was very courteous and respectful