Tata Docomo — abusive fake calls

respected sir ,

this is subhadip banerjee i am cmplaining on behalf of my sister who lives in srirampur(west bengal), she is getting abusive fake calls from [protected]. this culprit i have located is in a place called rangareddi in amdhra pradesh. this person is calling from several numbers and the person is beali speaking. so it is my urgent request is to take some serious steps against this person