At first I enquired to their ‘Customer Care’ and, as advised by them, I went to my Home Exchange (which is about 1 km away from my residence) to submit an Application. The problem is, there are so many people don’t know how to write a letter for the disconnection of BSNL landline connection.īut don’t worry below you can find the sample BSNL broadband disconnection letter which you can also download in PDF format. Answer: Let me describe my experience towards surrendering my residential line BSNL (Calcutta Telephones). Once you submit the all required documents your request will initiate the process and within 7-8 days it will be complete successfully. BHARAT SANCHAR NIGAM LIMITED (Website add: APPLICATION FORM FOR CLOSURE/SURRENDER OF TELEPHONE 1. Whenever you want to disconnect BSNL landline connection you must need to submit the letter of disconnection of internet connection to the concerned authority of BSNL office with some important documents like landline surrender form, copies of telephone bills and proof of identity. But if you want to do it online then check out How To Disconnect BSNL Broadband Connection | BSNL Landline Surrender Form Online. In this article, we are only discussing offline method. There are two different ways to disconnect BSNL landline connection such as online and offline. Letter to Disconnect BSNL Landline Connection 2 Sample Letter to Disconnect BSNL Landline Connection.1 Letter to Disconnect BSNL Landline Connection.