[Resolved]  Airtel / Broadband — Bill Paid by me, not updated by Airtel and charging late payment charges.

I have paid my Airtel Broadband[protected] bill for the period 26-04-09 to 26-05-09, which was payable on or before 25-06-09, on 03-06-09 through ICICI Bank (Madurai - K K Nagar Branch) Cheque No.648899, dated 03-06-09, which was debited from my Account on 08-06-09 towards Airtel as per bank statement. The cheque was drawn on "Airtel (A/c[protected]", as instructed in the Bill. To my surprise I started getting SMSs and calls from Airtell from 20-06-09, regarding non payment of bill. In every such calls from Airtel, I have given them all relevant details of my payment, but they have not updated in their end. Finally i raised a complaint regarding this issue in Airtel Customer Care on 26-06-09 explaining the details. The Complaint No. given was "21317850", and promised that the issue will be solved within 2 working days. Today 01-07-09 i have received the next bill for the period 26-05-09 to 26-06-09, in which I found that it shows that previous bill is unpaid, at the same time I have been charged Rs50/- + service tax for late payment of bill. Also the bill is payable IMMEDIATE.
I feel it Insulting and Harassing. I expect from Airtel –
(1) The late payment charges and Service tax their on should be reversed immediately.
(2) Airtel should Apologise in writing for this mistake.
(3) Airtel should Waive my latest bill as a gesture of Compensation for the harassment done to me.