Tata Docomo — Abusive language

sir,
This is Dr.Sathya narayanan, in possession of my vodafone number for the last 5 yrs. Asking for a friend's number from another friend, i wrongly got the foll no of a prankster named rajesh from madurai-[protected]. I was forwarding medicine related messages(which i suppose were decent) thinking it to be my friend's. One day this guy messaged me tat its some other person after which i deleted the number. Now today he gave missed calls and sent abusive messages asking my name

Eg; Dai ###, tel da. I also having work da. U oly send message to me first.

K , i'll leave u, can u give your lover no or your......?

Tel your detail da. Else ll ask too about your family da ......

Hurt and not able to bear his nuisance i finally revealed my name. I was taken aback by such an educated fellow using so abusive language. I am writing this with lot of anguish and hope you are able to sense that seeing the intensity of his words. Today its me and tomorrow its someother person. So pls take steps to atleast warn that guy and make him understand the use of telecom services.
His name:Rajesh from madurai
Phone nos:[protected], [protected]. My no is [protected]. I ll be more glad if you people attend to my query. Thank you in advance