Sansa Clip Not Charging

My Sansa Clip is not charging anymore. The same thing happened before but then it started charging again magically. Now it happened again and is not charging anymore and I do not know what to do, so please help!

Thanks!

First check things in your control, like trying a different USB port or a different computer if available, making sure the cable is connected fully, things like that.

Then call SanDisk Tech Support