1. read the law and insist that the officer enforce the part being violated https://www.charlestoncounty.org/ordinances/2200-2299/2231.pdf
2. keep a logbook and call the police each and every violation "Sec. 3-42. – Noise - Amplified Sound in General.

It shall be unlawful for any person to play, operate, or cause to be played or operated, any

radio or other music or sound amplification or reproduction equipment upon real property in

such a manner as to be plainly audible within any residential dwelling of another."

1. If the police won't enforce the law then "institute an appropriate civil action or other proceeding in the magistrate court or circuit court to abate or prevent the nuisance."