My deposit not returned back.

I reneted a car from Avis on 4January 2023 through my insurance , well on that day of collecting the car they car i paid 2000 deposit (of which was reserved from my bank acc) I returned their car early (30/01/2023) and everything was fine but to this day (11/2/23) i did not get my deposit back, i received a message later that they will send me an invoice after 24/72 hours, okay fine a week went by but nothing, so on Saturaday 4/02/23 , i sent them an email through customer care asking about my deposit and the sms they said they will send. Well they response was that ilmy insurance paid for everything thats why there was no invoice but i mean, where is my money???? insurance paid for everything i get it, money will be rleased between 24 / 72 hours, that was the response, on monday! I waited till Thursday, i gave them a call and they said the person who received my case only submited on Tuesday 7/2/23 and they confirmed that the bank did confirm they are still holding my deposit........, okay it should reflect Thursday evening or Friday. Today is 11/2/23, still my 2000 deposit is still on hold.

Am not happy with their service at all . My insurance sorted everything for me and worse i returned their car they way i took it and i returned it early than the date they gave me. I mean what is the hold for!