Went in with a brake issue that was concerning me....

Went in with a brake issue that was concerning me. I was informed that it was my rear brakes. I told the service advisor that I wanted it fixed. After payment and checking out once I got home I noticed that my vehicle was making more noise after the service than it was before. I was unable to take it back because I had to leave for work. My wife has been working with the initial service advisor, but she needs a loaner vehicle to be able to make work and has been unsuccessful in acquiring one, which is causing a problem.