Hi
1. The company may not sue you if you break the bond as it will not be successful in recovering any money from you through court order.
2 The company may send you a legal notice as part of their pressure tactics.
3. You should resign only if you are Sure of another secure job without your originals and a reliving letter.
4. Along with your Resignation letter ask the company o return your original certificate which are with them.
5 No employer can force you to work or continue to be with them.
6. First send a Resignation letter without any Notice period showing your personal reasons and in the letter ask them to return your Originals. Meet your boss in person and Submit the resignation
7. Depending on their response send legal notice if the certificates are withheld.
8. If they do not give certificate despite the notice You should approach the court.