The cat that I adopted developed an infection from...

The cat that I adopted developed an infection from surgeries done on him by the ASPCA before I adopted him. They refuse to provide documentation of the surgeries done on him and the medications given to him. They told me that they extracted only two teeth and months later confessed that they actually extracted 6 teeth. My cat drools blood in his sleep and has an ear infection from the ears that they dd surgery on. Where is the information from these procedures? They do shoddy work and then close their ears when the new owners find out that things went awry.