We're sorry it didn't work for you!
Mighty Patch works best on pimples that have whiteheads or pus in them. They work by extracting out the pus and fluid in the pimple and then flattening it and speeding up the healing process.
If your pimple doesn't have pus in it, it probably won't work!
Here's a blog article that explains the reasons why the patch may not have worked and how to fix it: