ARGGGGHHHHHH!!!! I KNOW HOW YOU FEEL!!!!!
We live in a converted house. There is a seperate entrance to the downstairs and upstairs and it's now two apartments. We in the bottom one and the man above us drives me to complete despair!!!
The man who moved in a couple of weeks before me last year was great, so quiet and a really pleasant man.
We had a load of problems with our neighbour on the left of us and people on the street were ALWAYS complaining about her. She would have gangs of people hanging out on her front garden smoking, drinking, shouting and swearing and had no respect for others who live her. A neighbour confronted her once and she treatened to burn her house down so no dared say anything directly to her after that. She got kicked out eventually and then the street was nice and peaceful.
BUT... the man upstairs moved out and the upstairs was empty for a couple of weeks.
A man across the road who lives with his elderly mother, (his mother was one of the people who used to complain about the girl next door), moved in upstairs. I thought he would be really considerate to have above us because he's known what it's like to have neighbours who has no respect.
Let me tell you... this man, who is in his late 30s, is the MOST inconsiderate man I have EVER met! He plays his music so loud I can clearly hear it over the tv, he stomps about and has no carpet and the speaker in his flat is from a nightclub and is on the floor above our bedroom!!! He has young teenage lads hanging around him that are school age! I've said something to him about his music a couple of weeks ago because I'd literally had enough, the floorboards above me were vibrating, and he was really apologetic and couldn't apologise enough... then no less than 4 days later, he starts doing it again! My BF went to complain to him and this man threatened to hit my BF!!! We're more grown up than him at 25 (me) and 22 (BF) and he's just a kid!
So I understand and I can only imagine how is it with a young child too, (ours is due in January so I'll know myself then)... I completely sympathise with you... I know exactly how upsetting, frustrating and irrating it is.
I've hit the point now where I realise that there is nothing we can do except wait to move. I hope you have better luck.