What legal action you can take against company cheque fraud and breach of trust?

What kind of case I need to file against a person which abused my trust, had access to my company chequebook, filled, signed with his own signature and handed over cheques to third parties without having an authorized signature in the bank?

To mention that the cheques were issued to replace cheques issued by another company, belonging to the accused party. All the cheques bounced due to a mismatch of signature.

Meanwhile, the accused is imprisoned due to other bounced cheques issued from his own company.

I'm being sent with complaints from Police to public prosecution and back, while the situation brought me in the position of not affording to pay a lawyer in advance due to accounts blocking and police case cascade against myself, from which in some cases I was already cleared.