I tripped over my plug for the millionth time and instead of the magnet part detaching the entire cord ripped out of the magnetic piece. it was on its way out for awhile now ive been having trouble with it connecting with the magnets for weeks now. it would take 15 to 20 times just to get it to charge. so my question is my laptop is still under warrenty. would they replace the plug for me or they wont because basically it was my fault. if they would replace what do i need to bring to the apple store. could i just bring the plug and a purchase receipt of my laptop to show its in warranty.