Hi, my ds is 15 and is late for school every day. I'm not always home in the morning but he is late regardless - today I woke him at 7.35 and 5 minute intervals since then - he was still in bed at 8.20. Then he has a long bathroom routine when he finally gets up.
There aren't consequences at school from being late, and if I say he'll lose Xbox time for example his reaction is extreme he becomes completely uncooperative and won't do homework etc. We tried bribery instead and it worked for two days only.
This is just one of a range of issues we're having. He has medication but no other support, other than in school at exam times.
He tells me he can't stand me quite often and I'm really starting to believe it. 
Anyone been through similar? (And survived?) Thank you