Got only service letter with Remarks.

I have joined in Infosys with fake experience and worked for 3years but suddenly I got show cause email asking to submit previous company bank statement PF book and Form 16 TDS. Then I dropped the papers after 3days they scheduled the call and said today is the last working day please return the laptop and ID card. After few days I got only the service letter in that letter they mentioned my role, joined date, relieving date and also mentioned a remark. The remark is "Resigned during background check investigation"

1. Please suggest how to get the relieving letter.
2. How can I clear my BG for next company
3. Is it possible to join in private banks like HDFC, Axis, ICICI etc., Kindly help me on this.