You can only ever sue a law/accounting firm for the total cost of services rendered to you in that year or whatever. Depends on the client agreement. Even then

You can only ever sue a law/accounting firm for the total cost of services rendered to you in that year or whatever. Depends on the client agreement. Even then it's always a grey area where it's advice that may or may not be what you should do and it depends on your decision, blah blah blah.