I want my money back !

I rented a car at avis via rentalcars.com they took my payment of R 3,431 which is the car hire charge of R1148, full Protection insurance R1757.22 and that was made on 9 december and had to collect it on the 10 of december at 6:30 the mornings . When arriving it came 2 my understanding all my documents that I had does not comply ,meaning my nedbank Gold chequesa acount did not have my name on it, and I'm a licensed driver meeting the age bracket .However I then cancelled it and it was so . I was advised that I would only pay a cancelation fee of R400 which I was okay with they then promised me that I would get back my R1148 of the car charge fee for ten days and my R1757.22 for the full protection fee because I showed up the same day and cancelled . However I received only a R1148 and never got the R1757.22 I then went back on a week after because they said all my money will be in my bank within 7 to 5 working days and i only got back R1148 .i then went back 7 days later got on the line with them and Jason promised me again I would get it back and I never did it's already the 23 of january 2020 .This company make so much money and yet the still Rob you of so little . But God will deal with your company. And it actual fact I still want my money . Quick 2 take payments but look how hard it is 2 get it back .Poor services. And yet avis is working with them but all they say is sorry there's nothing we can do .