Sandisk cruzer 16GB became read-only

hello,
I read that there is an issue with the NTFS format in the USB sinse 2013, now (2016) I have the same issue and there is no a known solution for it, so, I would like to know if you already have any solution? or how can I get in contact with you for the refund solution? that because there is no a SanDisk in my country (Colombia south America).

my issue is that I am not able to change the “read-only statatus” to my USB, so I can’t save files on it or format or any admin task, in other words my USB is completly useless.