How To Write A Complaint Letter To Bsnl Office . So please consider our request to change our bsnl landline plan w.e.f 01. If you want to complain about a problem that relates to bsnl broadband, you have reached the right place. How to Connect / Disconnect BSNL Broadband/Landline from CODE RAMBO from coderambo.blogspot.com Dear sir/madam, i raghuram k, bsnl landline customer for last 2 years.at present our bsnl landline number 2123xxx has a super value bsnl cul plan, and now we want to change this plan to a value all cul plan. With due request, i would like your esteemed department to look into the matter and. There are many management communities that handle different departments.