1. File a contempt petition for violating the order of injunction. Make the lessee a party to the suit as well. There is no need to file a separate suit to cancel the lease. Once the initial sale is set aside all subsequent transfer including the lease will fall apience.
2.You cna give POA to your close relative in India so he in your absence can represent you in court. Moreover he cana lso keep a close watch on the case to keep your updated .
3. If there is inordinate delay in trial of the suit you can apply beofre the high court for expeditious disposal of the suit.