How to claim the pending salaries after leaving to home country?

Hi Everyone,

I was having pending salaries for about 5 months with my company. I sent them many emails for releasing my salaries as I was having room rent, food, and transportation plus supporting my family in Pakistan.

No one replies to my emails from HR or any other department. Then I sent a leave application with an official email that I have no money and I am going to my home country. For that email also no one replied.

I left the country and stayed in Pakistan for 40 days. Then I sent them emails for my pending salaries and ticket to come back for work.

My company's HR replied to me that I went without management approval and they decided to terminate me. Before a few days, they gave me a termination letter with immediate effect.

Kindly advise what should I do and can I get a one-month salary for termination without a notice period?