"Unabel To Format Card"

Please help i have a 64gb Sandisk ultra 85mb/s

Unabel to format 

Unabel to delete files

After delete files come back again !!!

  Screenshot_2017-12-18-00-22-33.png

It would help to know how you attempted to format the card.

The card was purchased 10/7/2017
With the s7 edge device, the card is installed in the device and I have no output from the machine. I can not copy or scan. The files are allowed to come again. I can not scan the images on the card. Maybe I do not know what the reason. I can not erase the files or the memory chip. or formattted sd card