I feel your pain OP.
For 20 years we have lived next door to a Methodist Church.
For the first 10-12 years no issues whatsoever.
Then they started to rent it out to the 7th day Adventists. Noise was unbelievable.
After years of arguing as politely as we could with the church and the Council we finally got to the point where the Methodist Church stopped renting to the 7th Day Adventists.
Brilliant - you would think...
... but about a year ago they started renting it to a Portuguese Church....
... all the same issues now - really loud amplified music going all day again.
Yesterday after 2 hours of hearing it all through the house I went over and into the Church to see what was going on.
About 12 people in the whole place. On the stage a singer, guitarist, drummer and keyboard player, a couple of amps and aobut 6 speakers... and to the side a fucking mixing deck!
They were doing "band practice"! I asked them if they could turn their amp down. They had a moan and said they would and came outside to listen... and did turn it down... but 5 minutes later back up top volume and carried on until 9.30 last night.
Of course not ONE person from the Methodist Church available or on site to monitor any of it.
We're going to have to campaign the Council again and I honestly don't feel like I have the energy....
... I'm known as "Church Noise Lady" on here!
I FULLY understand that there is a difference between a church and church service and what is essentially a music concert and the associated practice!!!