I have received unwanted calls & SMS from Tata Sky+ on my Mobile number 9667352583 at any time when i do my work or sleep at night.

I have also a registered user of NDNC. My NDNC registeration numberis NDNC/1348 registered in May 2009.

But some companies regularly torchered me
please suggest me how can i stop these SMS & Calls on my phone.