5 quarterly levy notices for 1 budget?

Long story short, our current manager who has done a super job in alienating himself from the OC by getting on a power trip has just issued the fifth quarterly levy notice for the budget that was passed at last AGM nearly 14 months ago.  Obviously he is exercising the right to not have to call an AGM until as late as possible to the 15 month mark.  The issue is we have defect problems and at last AGM it was decided to double the levy amounts to generate extra income to tackle the issue (pay lawyers).  Many owners have struggled to pay the bill and I know for a fact ‘deals’ have been done with some owners and the manager.  Everywhere I look seems to indicate that the budget is for the upcoming year and having paid 4 qtrs I don’t know why I should have to pay a fifth because the manager refuses to call an AGM.  FWIW, he knows a similar budget will not get passed.  Am I obligiated to pay or am I within my rights to refuse?  He also went to the length of posting the notices in the mail rather than email which has been the regular method used, which i am also skeptical of.