Dui leads to cop brutality what can i do?

I had a dui last night, and first off i dont think the officer had reasonable doubt to make me blow. Deciding that it wasnt worth fighting over it with him i blew. He said i blew a .141, he cuffed me and put me in the back of his vehicle and did not read me my miranda rights. We get back to the police station, i asked to make a phone call he said in a second, i told him if i need a ride i have to let them know now as it was already 3:30 am. I got up to stretch and he shoved me back down and tightened my cuffs pretty hard to the point where it created a small cut and made me bleed. I said i want to file a report since i was bleeding. He calls his superior officer in to do the report at this point they were laughing and making fun of me. Finally when they go to escort me out i said something about the cut on my wrists and that i was pissed and i will be contacting a lawyer, the head officer then grabbed me by my neck and shirt and slammed me against the wall and yelled a few things. What can i do i feel this was taken out of hand and i was part of police brutality.