Does unpaid PGT work and reduced salary mean cheating?

As per the offer letter, the PGT post was subject to approval from higher authorities. A reduced salary was paid. When I asked for the actual appointment letter, it was refused on the grounds that the profile had not been approved by DAVCMC in July. However, I was still allowed to work and was partially paid, yet no appointment letter was ever issued. When I asked again for the appointment letter and proper salary, the principal was restrained without any notice. After filing a case, a cheque payment was made illegally. Would this not fall under criminal breach of trust or cheating? The CJM court dismissed the case, stating that it is a civil matter, especially since a writ petition has also been filed. Should we challenge this verdict, as we are seeking punishment?