Deposit Refund

I rented the car from Woodford Hatfield over a month ago and I returned their vehicle, the first time I was not refunded even a cent from my deposit and I rented again until to date my deposit is not yet paid back. I have calling and sending emails to get my deposit back but they always give me different stories. They asked me to send a different account number for a refund of I did last week and they sent me a POP until to date the money is not yet paid back. I don't know if this is how they **** people because their call centre agents give conflicting information. I want my refund. I just checked their reviews., almost everyone is complaining about deposit refund