You will have to send a legal notice to the company. But, before that reading the employment contract will be beneficial to give correct advise.
So, you can share that with me over email ID at firstname.lastname@example.org
First you have to send a notice to him asking about salary
You can file suit for recovery of salary amount
You can call me for advise mob no 9359867870
Advocate IRFAN SHAIKH Latur Maharashtra