Discontinuance of Reliance datacard-still getting calls for rental charges

Location/place: Mumbai (andheri)

Name of company/service: TV Today Network Limited

Dear Sir / Madam,

I was using Reliance datacard net connect services (MDN NO 7498220374) while i was working with TV Today Network Limited. I had wriiten a letter to Reliance Communications Infrastructure LTD – Alc RIS with regards to cancellation & immediate stoppage of the services from 1st May 2012. And i had made the final payment of Rs 1235/- which was pending against my name.
I had made the payment vide cheque no 576123 dated 21/6/2012 SBI Branch.
The services have been stopped but i am getting frantic calls from Reliance to pay the rental charges.
Inspite of submitting the letter, i am being harassed like anything.
I would like to request you to kindly look into the matter & try & get a solution for me.

Thanks & rgds

Suresh Pathak
Sr Manager- TV 9
Mumbai