You can very well recover this bond amount when absolutely no training was provided to you.
Service bonds are at first place illegal in India for they are in derogation with section 27 of the Indian Contract Act which says that any Agreement which is in restraint of trade and profession is void.
Still some employers enter into service bond and cleverly extract bond amount on the strength that they spent excessive amount on providing training and special skill development to the newly inducted employees and thus, to secure their position incase such employee leaves before the lock-in period, they'll forfeit the bond.
However, when absolutely not training at all was provided to you, the bond is outrightly bad and you can sue them to claim your refund.