Does this mean the promissory note still valid?

An attorney needs to review this to tell you whether or not the waiver was valid. This is more than a yes or not question and so it takes some time...

Can I sue for breach of contract?

Read your contract and see if this issue is addressed.

What should I do. ?

You got asked to leave private property. That is still allowed in America. They also gave a valid reason that does not fall under any protected...

What should I do with this check marked "paid in full" that is NOT a full payment or an agreed upon settlement?

In short, do not cash the check. She is trying to be sneaky and catch you unaware. Get a new one for the 1,000$ and then make her pay the rest she...

By the finance company acknowledgement of their mistake and refunded the repo fees, is this consider unlawful repossession?

Write them and demand your fees back. If that does not work, retain an attorney.

In Texas entities can general be converted to another type of entity. Consult a business attorney to help you plan the conversion and execute it...

Can officer or majority of officers veto bylaw proposed by board of directors? Can other group of officers strike down bylaw?

The state of Texas is typically very deferential to bylaws. Check them or have an attorney go over them for you.

How can I fight APS? How can I hold my sisters accountable for false allegations?

Attorney Lassen is right on the money. A lot of times a cease and desist letter can correct a behavior. Also, you (or someone) should have powers...

Probate is your best choice. It is typically the preferred avenue of any attorney who practices in this field for a reason. It contact an attorney...

Plaintiff maintained a frivolous lawsuit against my spouse and me harassing us for three years.

I would be extremely interested to see a copy of the transcript to see the exact phrasing of what you say they admitted. Wording can be tricky. You...