AC Direct- headphones, warranty, durable, return, broken, ac direct, purchase Internet

Bought headphones for my classroom lab, all of them broke (no sound, wires came apart from the volume control), sent them back to try a new brand of headphones which then broke again. Called about the issue and they wouldn't accept the headphones as a return because the warranty was up. The warranty they used was from the FIRST purchase, not the second purchase. If you ever return your headphones bought from them, your warranty does not start over with the new headphones, it continues from the very first purchase which is not fair AT ALL! Their headphones are awful and not durable AT ALL! DO NOT BUY FROM THEM!!