Simple repair to the headphones with broken jacks. Please verify the plug is broken on the headphone before sending them in.
Please realize that the cable on your headphones is likely poor quality, or the headphones themselves are not worth that much money. This is really meant to be a quick fix for people in tight spots and don't want to lose their sanity to the surrounding world (hence needing headphones!). Don't expect this to solve your problems forever, and seek a better pair of headphones if you can spare the cash.
You have been warned.
Some recommendations for new headphones:
*If headphones cannot be serviced, a refund will be sent.