No assistance from Outsurance

I received a rental vehicle through Hertz car rental arranged by Outsurance, while our vehicle was at the panelbeaters, a refundable deposit of R1500 was paid to Hertz car rental on the 05/04/2022 and the vehicle was returned on the 16/04/2022. I have still not received my refund from Hertz car rental and its been a month. When contacting Hertz i have been to told to contact outsurance to assist with receiving the refund from Hertz. I have made 3 calls to Outsurance but have received no feedback from them as to when will i receive my deposit from Hertz. They only tell you that they will send a e-mail to Outsurances,s contact person at Hertz. This is very bad service from Outsurance and to everyone who reads this message please avoid using Hertz car rental, they are the worst!!!!