Dirty Cars Does Not Equal Bailouts

So, just yesterday I get a frantic call from a woman about 10 min. after opening,

Me: "Thank you for calling ******, this is ********, how can I help you?
Her: "Hi! I need to know. Do the carwashers clean the cars in the morning?!"
Me: ".....Yeees."
Her: "Okay good! That means they found my laptop under the passenger seat in the car I rented!"
Me: "Okay, um ma'am I'm going to need to know what car you dropped off last night?"
Her: "Oh! It was a blue focus"
Me: "Okay, I'll get your number and go down to the vehicle and check it for the laptop, and call you right back."

I then proceed to walk out to the car to check the vehicle for the laptop. I open the back door, and looked under the passenger seat.
Sure enough, there it is. I turn to close the door, and notice sand all OVER the floorboards in the back seat, looking up towards the seat, I notice hair.....TONS of hair! It covered the whole back seat. I open the front passenger side door and it's the same story in the front seat, with an additional mess of 6 to 7 empty bottles and drinks all over the place.
NOW, my initial thoughts of anger towards the lack of respect from individuals who rent cars was immediately extinguished with the fact that I was trying to have a good day, and at this point, it was only 8 o'clock in the morning.

I go back to my counter and check out the reservation, where I'm able to view the contract and price that the customer rented the vehicle for.
I notice that the customer had the car one day at a price of only $** a day. Now comes the point where I have to charge the customer as per our contract terms and conditions for returning cars FILTHY DIRTY.
$** charge.
I then call the woman and leave a voicemail, then I kick back and start daydreaming of the situation I'll have to deal with in the next 24 hours when she finds out how much she was charged.

Trust me, I was prepared.....

The next morning,

Me: "Thank you for calling ******, this is ******* how can I help you?"
Her: "Yes, HI...This is ****** and I left my laptop yesterday??"
Me:(smiling) "Hello, how are you this morning!?"
Her: (sensing my smile, I assume, starts yelling) "I am horrible!"
Me: (overjoyed)
Her: "..I just had my checking account get charged for more than I had in the account and YOU are going to pay for ALL of my overdraft charges and GIVE me a refund on what I payed for the car rental, because I am furious to see what I was charged!!"
Me: "Ma'am, I'm sorry but when we did a further examination of the inside of the vehicle, we noticed that there was more than an INCH of dog hair all over the back seat, empty beverage containers covering the floorboards and SAND carelessly piled throughout the vehicle.."
Her: "...."
Me: "So, you did receive a *** charge for the misuse of the vehicle and lack of respect for returning the vehicle in the same manner it was given to you."
Her: "I didn't know you charged for that stuff! This is a scam! You're just trying to make money off of innocent people like me! I didn't read that there was that sort of charge ANYWHERE on the contract. SO I WANT MY MONEY BACK!"
Me: "Actually.....You did legally sign a contract stating that you would abide by the terms and conditions that were provided to you with the contract. And I quote..."

I then read the paragraph and line to the woman stating that she would be responsible to pay any additional fees for the cleaning of the vehicle as per the terms and conditions that I had sitting right on my counter.

Me: "....so unfortunately I cannot pay your overdraft fees for your bank, whether they may be for this rental or other transactions, AND I cannot refund you your cash since I do hold in my hands the very same contract you signed before you were given the keys."
Her: "Umm....Okay."
Me: "Thank you. Have a great day!" :)