One starts by gathering information – email addresses of residents, copies of SC and AGM minutes, full set of by-laws etc. Send the Secretary an email and hope he/she copies in the other Committee members in his/her reply. Then you will have all their addresses. Bombard them with complaints, but don’t say anything that might be defamatory – it is a favourite tactic nowadays to threaten defamation action to shut people up.
Check the SC and AGM minutes on the SM’s website against those posted on your noticeboard. I caught our Committee out for having two sets of minutes, one for them and one for public consumption. Caused them no end of embarrassment. Good luck!