Contact the local police department and see if they will file an OFFENSE report (at the VERY least they will have to note that they were there and its on the record).
You can try to show them your paperwork, but know that 95% of the time, you will hear “civil matter”. Stay nice!
If the officer(s) refuse to complete an offense report citing it as a “civil matter” (be sure to audio/video record) thank them for their time and inform them that you will be contacting both their Internal Affairs division to file a complaint as well as submitting a report to the US Department of Justice under their “Deprivation of Rights under Color of Law” via this link.
When completing the report, please understand that it was not due to not due to interference of child custody, but rather due to the fact the officer took no steps to preserve your court-supported possessory rights under state criminal and federal statutes. This youtube video goes into more detail.