Can not delete files from My Passport WD 1T with MAC

Hi,

I have brand new 1T my passport and I have put some files on it( around 900 gigs) I use Macomb I have deleted some of them (around Gigs) but still it shows on my passport that I do have just Gigs space while I can not see my deleted files on it.

I can see my deleted files on TRASH of my Macomb and also I can not delete them from my TRASH,it gives error.

WOuld you please kindly help me to delete files from my TRASH and also from my passport and get remind spaces?

Thanks a lot

Hello,

Try doing a Disk Repair using Disk Utility.

How to test a drive for defects or problems on a Mac 

I did that already,disk is ok!but still I have same problem.
Any idea?