Obnoxious calls

Dear Sir,

I wish to write to you that some one from tel. no. 65161384 ( a Tata no.) is making frequent obnoxious calls on my mobile no. 9810626052. The person doesn’t disclose his identity.

Can you help me anyway?

I await your reply

Thanking you

Arun Kanodia

H-23/19 DLF Ph.I

Gurgaon 122 002