Dollar Rent-A-Car Takes five times the amount of rental from you bank account san antonio, Texas

When you rent a car, they out a hold on your credit card for a larger amount than the rental cost, in case you damage the car. Since you used a *debit* card, this means that the money "held" is taken out of your account for a bit. Next time, use a credit card. 

You did.  When you signed your rental agreement you agreed to allow them to hold a deposit.

Apparently you have never rented a car before or this is the first time you used a Debit Card to rent a car.   Because this deposit is standard with EVERY company.  While the amount of the deposit is based on your estimated rental cost, as a standard most companies will hold a minimum of $250-$300.

Because of a way a Debit Card works, the deposit is actually withdrawn from your account, where with a credit card they just "hold" this amount.  This same thing applies for things such as Hotel Rooms and Pay at the Pump gas stations.

Also, while I can't speak specifically for that location when I have rented cars there is always a notice around the sales counter that states that the funds will actually be withdrawn if you use a Debit Card.

What gives you the idea that this is policy and not just an accident or misunderstanding?  And exactly how where you ripped off.  GROW UP!