Childcare is quite high in demand but low in supply in some places. I managed to enter my twins into childcare when they turned 18 months because my eldest daughter was already inside.
There isn't much you can do if the childcare doesn't even allow you to be placed on the waiting list. Just have to call every other month to check if they have any slots. Otherwise, just have to wait for a call from those whom you have been placed on the waiting list.
I remember in end 2010 when I tried to enroll #1 into My First Skool and was placed on a waiting list. I got a call from them only 1 year later!
If you are intending to go back to work, then you may have to consider hiring a babysitter first.