Greetings. First, let me tell you emphatically that I do not know anything about Tennessee law on divorce, child support, child custody, etc. So, if you were in North Carolina, I would tell you to obtain a private attorney to assist you with the child support issue (to help you organize your documents into proper exhibits and to subpoena documents from your X).
Also, if your child custody schedule was set by the court in an order, you should immediately file a motion to show cause to ask the court to hold your X in contempt for the times she will not assist you properly with visitation. If you do not have a court order, you will want to file a claim for custody. Filing a claim for custody is the only way for the court to listen to your problems with visitation.
Filing a claim for custody does not always mean that you are seeking the child to come live with you, but there is no other way to request changes or improvements in the visitation schedule - since custody and visitation are almost synonyms. Best of luck in Tennessee!
Janet L. Fritts
Attorney at Law
4101 Lake Boone Trail, Suite 200
Raleigh, North Carolina 27607
The response posted above is based upon the limited factual information made available and is not intended as a full and complete response to the question. The only reliable manner to obtain complete and adequate legal advice is to consult with an attorney, fully explain your situation, and allow the attorney sufficient opportunity to research the applicable law and facts required to render an accurate opinion. The basic information provided above is intended as a public service but a full discussion with an attorney should be undertaken before taking any action.