Deposit delays

It has been over a week since I returned the car which was only for one day rental anyway. When I call I speak to different people who says different things. One said it will take 3 to 7 days, the other one said 7 to 21 days and now I am being told that it might be a full month. When I asked what is the status on my deposit refund and what cause the delay they said they see the status of the refund😳 Do not waste your time with this car rental company! They seem to not know what they are doing. I just hope I eventually get my money back!!