Maaco Collision Repair and Auto Painting The worst customer service Humble Texas

Very cheap work. They owe me more than money and time.
My car was not in bad shape but the clear coat was peeling out. 
Hashim (I imagine a supervisor who doesn't know the meaning of supervision or quality work) gave an initial price for my car's job. He called me one week after dropped my car explaining they need to sand all the car and they have to charge more money from the original price. Other than that, he will not be able to give me a warranty on the job.
Because I was looking a better look for my car, I agreed.
When I took my car to the shop it came with two original stripes painted, which I requested to be painted as well. Hashim want to install some lame paper ones instead of painting them. He argued that it was not part of the initial agreement and because it was not signed in the contract, he will not do it. He needs to mask the car again and that will cost more money, said.
Short story; when I came to get my car, it was not painted the way I wanted, parts were not installed, all my interior's car was with dust of the sanding, and when I told him about this he came angry and move the car again to the back part of the shop telling me "come to get your car in one month" and by the way, he want to charge storage fees because according to him, the job was done. Yeah, with a quality far away from the lowest standard.
This is the kind of attitude you will find on this shop. Low quality and not customer oriented service.
Then, he came with the next bright idea of his mind, all this because I have the right of asking for a quality job and he doesn't know how to do it: I will not accept credit cards, only cash.
I came with the cash because I want my car out of that cheap shop. This is not the kind of people you want to deal with. He has a lot of experience (more than 25 years according to his words) I'm sure doing this kind of practices where you -as a customer- have no more options than taking what is done because will be more expensive suing. And I am sure he has also experience with the law. Hope some day the law do something on this guy. By the way, I called Corporate and they said the same, it is not in the paper, we can do nothing. I feel this is the most easy way of doing a fraud. I had no alternative, just keep my car and live with the consequences of trying to improve the look of my car.
I will regret every day when I see my car. It has all his gaskets with paint (the masking was very defective,) a lot of bubbles on the paint and waves from a really bad sanding.
Anyway, good luck and if you can, go away of this "Maaco Auto Painting" shop. Students in schools can do a better job and myself can do it better with the Rust-Oleum Spray Paint.