BUDGET rent a car Did not want to reimbursed the gas money Amarillo Texas

On December 20 I put gas on the rental car that I was dropping to the location on Airport location, I had it changed it for another car, since the first car I had was not working right and had a engine light on, so when I DROP the car full of gas of course, they didn't mention nothing. When I DROP the last car, then they told me i need to paid the first car gas since it was not full , I told them that it was full and that I have the receipt for it, I talk to ERIN which is the manager, she told me that she was going to look at it, in a rude unprofessional way;( never return my call, I had talk to her manager and he said that their scale said it was not full, which is a lied, they just want to keep the $13 dollars, is not much about the money is that fact they are stealing from customers with their lies also they said they can charge me $25 For everyday that i didn't drove the car because no one should drive the car only me, I said when I send the car with my husband and my daughter I was working, so they trying to get more money out me, BAD COMPANY UMPROFESSIONAL RUDE STAFF, NEVER EVER RENT FROM THEM AND SURE DON'T RECOMEND THEM, AVOID HAVING TO GO TROUGH THIS PLEASED!!!!!