I have problem with my thumb drive

Hello,

im suraj , recently i bought 256gb kingston thumbdrive on ebay nowthe problem is it have 2 file systems ntfs and exfat .... during starting it is using ntfs system . i copy my document files in tht and bring to my work place and try to open my documents bt it says files r corrupted ..... then my frends told me to format it then i try to format it in ntfs file system but in quick format it show window enable to format and proper format take 2 days 2 format and at the end it show window enable 2 format.. after that i try to format in ex fat file system it format very fast but nw the problem is my workplsce computer show file type raw and used space 0 and free space 0 but on my personal computer i can see the file pls help me wht to do