32 gb kingstone pendrive is not opening...

Hello,

i have 32gb pendrive. it was working properly in the starting time. but now a days if i store any folders, folders will save but inside the files are not saving. and one more thing today i opend my pendrive its not opening at ll

i dont know what i have to do.

this made in china.

kindly help me to open my pendrive, i have stored important datas og 8 gb

regards

nirmalin vasanth