Referendum... when???

According to the WTNH article, West Haven Residents Rally over proposed budget:

The City Clerk tells News Channel 8 that the group has gathered enough signatures for a referendum however she adds that the issue would have to be debated in City Council and a vote would not come about for at least a couple months.

Why is this going to take a couple of months??? That makes entirely no sense... this is an immediate issue. Our tax bills came out on July 1 - are they going to rebate our monies to us should they change the budget??