1) in the event any. Suit is filed it woukd be subject to jurisdiction of courts at Delhi . Better to engage delhi lawyer to Defend case
2) reply to legal notice that you resigned on health grounds as unable to work
3) enclose your medical reports
4)mention that you are not working in any other organisation
5) legally company has spent money on your training for 3 months. It can seek to recover the said amount under the bond signed by you