I have payed child support to my ex for the past 7 years, all documented, all agreed upon between us with no court order.

Documentation is excellent. As Anthony said, get another attorney who can you can trust to represent your interests..

In Massachusetts is a defendant entitled to view records of their case held by the prosecutor's office?

Usually this request is filed by a person's attorney.

Does my son's father need to still pay child support ? my son is 19yrs old, A full time college student who still lives with me.

you have heard it before. One would have to review the judgment before being able to understand your issue.

How can there be a reassessment of a clerk hearing in juvenile court?

If the clerk did not cause you to be arraigned, which is what it seems to be, then move on

Can I file a complaint/claim for defamation of character?

In addition to the above you can file suit and ask the court to order the removal of the defamatory material.

Whats Next?

Jurisdiction from what you said lies in Oklahoma where the children reside.

you are totally misreading the penalties for a violation of a 209A protective order. It is a criminal act and it is subject to a complaint and...

Can I have a different lawyer file my appeal with Appeals council after all denial?

Absolutely. There may be a time limit for the process.

Can my probation officer ask me if I am sexually active? Also can I get released from probation when I owe a fine?

Was there a context to this question

Incorrect spouse name on divorce NISI in Massachusetts

Could be clerical error. Contact the clerk.