Unfortunately, in Wyoming you need to be 17 in order to petition the District Court for emancipation. See http://legisweb.state.wy.us/statutes/statutes.aspx?file=titles/Title14/T14CH1.htm
Usually, the Court will have the paperwork that you need to request emancipation.
However, if your parents are hitting you and you do not feel safe then you should contact the authorities. This concern is beyond the scope of emancipation and online advice The County Attorney or Department of Family...
It is important to review the trust document to see what language it has regarding your duties. Additionally, check the laws of the state where the trust is sitused. Your duty is to the beneficiaries. Not just the current beneficiaries, but any contingent or future beneficiaries.
If the Grantors have given you notice in writing that they do not intend to make any additional gifts, then you should review all of your options in regards to the current trust assets (including the life...
Likely the bank wanted to ensure that they had the correct payee. It is equally likely that a knowledgeable banker would have been able to work with you to achieve your goals once you established that you were the sole trustee. As the sole trustee and beneficiary, you can make distributions from your checking account into a money market account. You should check with your estate planning attorney to make sure the money market account is properly titled.
Mr. Frederick's answer is a great one. If the executor is represented by an attorney you could contact that attorney's office to get some answers. In the meantime, you should check with the Court to see if the Notice has been filed. It could be that the notice was "lost in the mail" and the Court file indicates you were served.
You may not need to formally revoke the guardianship if your grandparents and father agree that you can physically reside with your father. Your are old enough you should have some preference to choose to live with your father, but that is state law specific. You would need to research Indiana law or speak with a local attorney.