Q4 cenvat is adjustable to q3 st payable? and cenvat refund

Dear Sir

I will payable for the Q3 ST is 750000 but My Q4 Cenvat Credit is 950000 this is after Q4 ST Paid my Dought is

1.) Q4 Cenvat is Adjusted to Q3 ST Payable

2.) after this FY 2012-13 my Business will closed no Single transaction is done and ST Collect and no Paid so My Cenvat Closing Balance 2,00,000 is Refund to me or not (i.e. Cenvat of Q4-9,50,000 Less Q3 ST Payable is Rs. 7,50,000)

Note: Our Status is Firm and we are only Service Providers no Export or Import and Manufacturing.

Please tell

Thanking you