Reynolds — I am complaining about leakage of trimax pen

My pen leaked due suddenly when i was completing my important work. The company has been making these leake pens and is not correcting the defect. I would like to have my money back so that i can buy a new pen.I have been a regular user of trimax but the pen always leaks now and is not corrected by the company. So i would love to have my money back.