Agency refusing to pay back deposit

I am a victim of Rentals.com/harcourts/tergro group. I experienced the same problem with them by getting back my deposit.

Rentals.com was happy to collect rent from me monthly but when I moved out of the property in March 2024, Valarie and team at Rentals.com were comfortable to refer me to Mario Grobler and telling me that the company has split. Then why the hell did you continue collecting rent from me knowing very well you will not refund my deposit. This Mario character never answers his phone and never responds to emails.

Now all these companies flat out ignore me.

DO NOT do business with this group of companies. They are clearly ****mers.