The simple letter format to disconnecting the BSNL internet service is provided below.
Date: dd-mm-yyyy.
From
Your Name and Address,
(Mentioned in the telephone bill)
To
BSNL,
......................... Telecom District.
(Telecom District is mentioned in your telephone bill)
Dear Sir,
Sub: Disconnection of my Internet
Connection (Telephone number: 0123 4567890)
Ref: Account Number xxxxxxxxxx (Mentioned in your telephone bill)
With regard to the above I
request the immediate disconnection of Internet Service as I no longer require
this service. I can assure you that upon disconnection all pending accounts
will be cleared.
Thanking you,
Yours faithfully,
Your Name and Address.
If you need suggest anything regarding this sample letter kindly mention in comments.