If you just want to complain to try to prevent that this happens again in the future, then writing a letter to your President and Administrator and asking that your complaints and petition for reconsideration be put in the Agenda for the next Community Meeting, whether it is an AGM or an EGM. In this way the rest of owners will at least be informed of your opinion on this matter and perhaps they will vote to reconsider the issue. Make sure you ask that such reconsideration is also clearly stated in the Agenda,
Of course, this is no guarantee that the new voting will go the way you want but at least it gives you the chance to have the owners become aware of what happened and this might be enough for the President to refrain from this type of thing in the future.
However, if you want to have the voting cancelled legally, then you have to challenge the voting and the resoutions passed in court. If this is what you want to do, then you have to hire a lawyer preferrably one with experience in community issues. In addition, you must have voted against the resolution and this vote must be stated as such in the minutes of the meeting to be able to legally challenge it.