Purple Optics — spectacles has lost its life with in 6 months (26/6/18)

Address: 603001

I am customer for chengalpet branch and purchased lenz alone for rs. 11000/- thru my 0rder no 11254/08/12/17. Used for 6 months and today my right side frame given away while opening. I used very carefully and not dropped down. After paid this much and careful usage i get punishment for rs.5700/- to change this one side lenz.
I am really unhappy to do this with in 5 months o[censored]sage. Why we spent this much