How can a freelance tour guide claim the pending dues from a travel agency?

Dear sir/madam,

I was a licensed tour guide in Dubai from 2019 until the beginning of 2020. I was working as a freelance tour guide and was pregnant, then the pandemic hit.

The travel agency I work with did not pay me. They always promise to make their payment but did not happen. I kept my follow-up until now.

This travel agency is still running and had a good business run when Expo 2020 opened and Dubai is open for tourists. Until now they are not paying what they owe. What shall I do?