[Resolved]  Airtel — Baring my services for POSTPAID CUG Connection

I would like to bring the following to you,
-I am a student of National Institute of Fashion Technology, Chennai.
-During the month of February-March, 2008, the Postpaid CUG (Call User Group) SIM were sold in our college campus by AIRTEL Representative (Mr.Sumenasan [protected]), that it was specially for our college.
-I paid Rs.500 to get the Airtel SIM. The SIM was advertised with various offers.
-Without providing any prior information my services (outgoing calls) were barred by AIRTEL service provider only after 15 days of my use saying that Students can't be given a Post Paid CUG connection.
-This was a contradiction to what that AIRTEL representative said and distributed.
-I was not the only victim of this. Many other students from my college had the same problem. But many of my friends are using the same connection till now. They are also students then why didn't their services were not barred?
-I lodged complains at various Customer Care AIRTEL showrooms regarding that. I was asked to keep patience as the AIRTEL Executives would come to our college and find a solution regarding that. But there were no response from their side.
-The last billed amount I remember was Rs. 500 approx which I paid at the AIRTEL showroom. I don't hold any due amount, although I don't have any Bill Payment Slip for that. After that all the problem started and my services were barred.

Now after more than 4 months I have got a legal notice from Airtel which mention the following-
-I (Himanshu Raj, Airtel Customer No.[protected] am liable to pay Rs.954.87 (monthly rentals, plan fees & call charges) for using Airtel Mobile No. [protected].
-If I don't pay the bill, it would make me liable for legal action.
-I have been asked to meet them on 18.08.2008 of this month between 10:30 AM to 4:30 PM.

Please help me with this as I am a student & its not possible for me to leave my classes on working days to meet someone on such nonsense matters. I have already suffered a lot because of the wrong information provided by Airtel.