I applied for Schengen Visa at Italian Consulate in New York. It was given valid for only 20 days. I asked for 2 entries 10 days in 2 different countries while the 2 entries are 30 days apart as I leave for India in between. They gave 2 entries and 10 days stay. But they probably did not see my tickets and the visa expires before my second entry, which is into Italy. There is no phone to contact and you can only contact them via email, which I am waiting for 3 days now.
As you wrote yourself in your comments already, you need to have an additional visa. One choice is that you get another visa for the second entry, or you organize for a multiple entry visa.
The multiple entry visa however will likely only be granted if you have traveled to Europe several times before that.
Since your two entries are one month apart from each other, there should be no issue for them giving you an additional visa, since the minimum period for a visa is three months before the trip.