Date of it file fy 10-11

From 1st April'10 - 31st Dec'10 I have worked in one company who is neither deducted my TDS nor issued me Form 16.

1st Jan'11-31st Mar'11 I have changed company & present company deducted TDS of Rs. 7001 during this 3 months & issued me Form 16 mentioning total Income from Salary is Rs. 62250. I dont file IT return for this year.

But now somebody tell me that the if I filed IT returns of FY 10-11 I can claim the refund of Rs. 7001 because as per Form 16 my total income is Rs. 62250 which is tax free. 

1) Shall I filed Return now ?

2) Will I mention my total Income during the year is Rs. 62250 ?

3) Any interest is payable for late filing of Return?

4) Shall I claim the Rs 7001/- as refund ?

Pls reply urgently