Maybe try the Quakers, they have no music at all and sit in silence, listening to God, who often doesn't say anything, or at least not to everyone.
If the sound is too loud in some churches why not just sit outside, you can still hear it, and enjoy the sun. Or you could record it or bluetooth it to a speaker where you can control the sound. Idk just trying to think of some solutions.
Esp when you've already asked if they can turn it down a little. I know a lot of people that have hearing aids (elderly) and often ask for the sound to be turned UP.