Noises from next door!

About 2 months ago some new tennants moved into the cottage next door. I am on the end of the terrace and the cottages are grotty and old fashioned, built around 1900. The walls are thin which is borne out by the fact that I can very often hear conversations all too clearly.
At the moment, my ears are being assaulted by someone who I believe may be trying to sing. Either that or I need to call the RSPCA as I think they could be torturing the overweight grey cat that they own. This 'singer' will never be on X Factor unless they make it as one of the cringe making failures whose family have egged them on while insisting that the judges don't know what they're talking about because this is the greatest singer - ever!!!
I have had to have a quiet word with them already because from the day they moved in I have been frequently disturbed at all hours of the night by a psychotic female teenager who, when throwing a tantrum because she probably can't get her own way, screams at the top of her voice and screeches a vocabulary filled to bursting with 'f' words and then bangs every door in the house as loudly as possible, running up and down the stair in the process.
If any producer is looking for someone to scream the most blood curdling scream imaginable for a horror movie, then please feel free to get in touch and I'll give you the address. The first time I heard it was in the early hours of one morning and I don't mind admitting that I was frightened to death. Well, you would be too if you were woken suddenly and you heard that. I didn't know whether to call the police as I first thought someone was being killed.
This young person also likes very loud, what I can only describe as 'head banging' , music. Not really music at all, just thump, thump, thump which sometimes goes on all night long and all through the weekend.
After a few weeks I had had enough, so one day, when I was putting the rubbish out, my neighbour came out on the way to work so I did mention very politely that I had been disturbed frequently, by the screams and tantrums and thumping music. I also mentioned that I had begun to keep a 'noise diary' for the environmental health department because this kind of disturbance was unacceptable. He aplogised and said he would address the matter.
To give him his due, he has and I have scrapped the diary. However, I still get the occasional disturbance so let's hope the decibels don't increase again.