My therapist sent me a bill full of errors, saying that I owe much more than I really owe. I called him, and he seems to believe that his errors are not really errors.

My understanding or misunderstanding is that in Massachusetts (or everywhere in the USA) you have 30 days to dispute a bill in writing or it is considered accurate in a court of law.

Anyone know if I'm stuck paying this inaccurate bill, or if I can still successfully dispute it?

(My SSDI benefits are too high to qualify for Greater Boston Legal Services, which is too bad since my rent payment, and non-federal student loan payments, use up more money than I get every month.)