My OJT company is asking a confirmation letter that they do not have to pay my salary for 3 months

My OJT company is asking a confirmation letter that they do not have to pay my salary for 3 months

Please email career@excelerate.asia with the following information for your request:
  1. Company name
  2. Company address
  3. HR/Hiring manager name
  4. OJT role:
  5. OJT start date:
  6. -OJT end date:

Please use the email subject: ""Full Name (CST Course ID) | Request for OJT Confirmation Letter from OJT Company"""