Community fee increase

Our community had its agm in the middle of April last year and voted to increase the community fees by nearly 100%! They had not collected the first and second quarter fees by direct debit on 1st jan and 1st April due to a change of community bank account and administrator.  Not wanting to get into arrears I had requested the new bank details and manually paid my fees on the usual dates. 
 The question I am having trouble finding an answer to is once the new fees were agreed at the agm can the increase be backdated to the beginning of the year? I have read the minutes thoroughly and cannot find any mention of it. 

If the minutes do not provide clarity over what was decided, or based on what, I suppose the first course of action should be to speak to other residents about it, or speak to the president of your community.