Service tax

Hello

From past 2 years i.e 31.03.2011 &31.03. 2012 service tax returns were not filed. But for the previous years manul return was filed regularly. In the year ended 2011 am having CENVAT Credit which is accounted properly in books and excise returns are being filed regularly. Now for the Year 2012-13 service tax payable arises.

So kindly advice that whether it can be adjusted with CENVAT Credit which is outstanding for the year ended 31.3.2012.

Thanking you

Rgds

Aalok