Sorry, bit of a long one...
The house next to us is rented out. I know the landlord to chat to but wouldn't go so far to call him a friend (lives a few doors down) but the house is rented through a managing agent (apologies if that is thr wrong term).
Our new neighbours have been here for a few months and are making our lives a misery. They have huge rows most nights with much loud swearing, throwing and banging things, and physically fighting (always the woman who starts it and hits the man but he hits back). We can hear every word of their arguments, whether we like it or not. Invariably these rows start late at night (10, 11 o'clock) just as I've fallen asleep and wake me up, then carry on for hours right next to my bedroom wall. The Police have been called twice but don't do anything because neither side wants to make a complaint about the other.
Additionally, we're now getting loud music in the evening too, and there is an irksome parking problem too (on street parking outside our houses for 2 cars, he is squashing 3 cars into the space by parking with his car against our bumper and has smashed one bumper already by bouncing against our car to park it).
I spoke to the landlord who was synpathetic but said he can't do anything and I would have to send a letter to the agentmaking a formal complaint. Does that sound right? Are the agent likely to do anything? I don't want to go ahead and make a complaint if the're merely going to tell the tenants that I've complained but do nothing as the tenants could then make even more noise just to spite us.
There is nobody else who can complain about them to back me up as their other neighbour is a field.