So so so so tired

For the third night in a row teen hasn't slept properly, i have been telling "experts" about his sleep problems since he was born but no one takes me serieously. last night he had a shower at 9pm then went in his room. i was shattered from disturbed previous 2 nights, so bedded down on sofa, we are a room short at present. at 11 pm teen came downstairs with all his bedding and announced he was staying on sofa in front of tv all night. i was so tired didn't put up much resistance and went up to his room.several disturbances later its 3am and the tv is on way to loud and teen is winding dog up. you can tell lack of sleep as behaviour gets worse. so down i come and spend an hour calming him down, remote control smashed in process, lots of back massage.I am stressed by now as not only exhausted but worried about neighbours. at 4.15 am i finally think victory hes snoring, wrong, 5 minutes later hes banging and shouting his way up stairs, another 10 minutes of massage he snoring again so i tiptoe down stairs hoping to grab some sleep on sofa. but its not to be withing 5 mintues teen is headbanging wall,why, well he wants day off school to catch up on missed PC time. i really am worried about the neighbours now as he headbangs wall from 4.30 to 5.30 am when he finally falls asleep. so here i am really wound up and really exhausted fall back asleep adventually to be woken by alarm less than an hour later, now have to face getting teen up and out the door for school. MUST BE STRONG!! as a footnote i called GP late yesterday as could see where this was going and he has prescribed sleeping tablets for teen so at least i should get a good night sleep tonight, they only work for one night then teen gets back into staying up all night and we are back in cycle again leading me to exhaustion, and when exhausted just don't cope with him so well. will try and grab some sleep when he is back at school later!