How To Write A Letter To Bank For Changing The Company Name?

Change the company name

From: M. Sathish kumar,
  no 4 4th street teachers colony,
  nanganallur,
  chennai-61

To  : The head of the department,
  annanager,
  chennai-61,
subject: Change the company name
Dear sir: Sir now my company name is NIIT but now change name of NIS so you give the permission to change the company name

  your faithfully
  (sathishkumar)