Form 16 not recieved from a vendor

Mrinmoy (Software Engineer) (86 Points)

17 August 2015  
I run a proprietorship business basically an IT firm. Last year I worked for a firm and they were paying 30K per month for which they were deducting 3K per month as TDS.

But they have not provided me the Form - 16 yet. What should I do? Due date for filling the ITR is also approaching.