Topic: Noisy family next door

My family and I moved into our new house in November, we were told by the previous owners that all the neighbours were nice and that they never had any trouble with them. Fast forward to April and we have had numerous problems with one of our neighbours. She and her kids are always shouting and arguing, one of her kids is around 11 years old and all you can hear is him swearing and there was once occasion when he walked up and down the road sounding a horn like instrument. The noise and problems with them never seem to stop, we've been round and told the mother, she knows that they are loud but it still continues. You would think common sense would prevail with these people but obviously not!