Can't delete anything from my Android's SD Card! No space!

[roryng]

Android HTC Desire,
Sandisk Micro SD Card

After downloading episodes through the Netflix app my phone and SD card ran out of storage. (14/16 GB Phone, 28.9/29.2 SD Card)
I tried to delete the downloads through the Netflix app but I could not access my downloads, as the feature isn't available if you have no storage space.
I used the Netflix website to delete my downloads remotely. They still took up space.
I cleared the app's cache and uninstalled the app, to no avail. I plugged my phone into my computer by USB to delete the downloads using file explorer.
I found them and deleted them, but they still took up space.
I called Netflix's support but according to them I had no downloads on my phone anymore.

After this I tried deleting other things from my phone like photos and files, but they only disappear until I open the app again.
Using the phone's file explorer doesn't let me delete anything either.

I still have no storage space and my phone is useless if I don't have the space for a single picture to be taken. Please help!

 

[Saga Lout]

Try removing the SdCard and slaving it to a laptop or PC then clear the data into a separate folder. Format the card to FAT and put it back. That backs up the downlads to be put back later, perhaps on a 64GB one - and clears the existing card.