I have been waiting on a refund from Horizon since 2nd April.
They provided a code for the BlackBerry 8900 as well and it did not work, and after trying with and without sim card I now only have 8 more attemps to make to get it unlocked.
After receiving a program from them to read my phone info they said they could not provide the codes. Looks like I need to purchase an unlocked Storm.
Even a Broken Clock is right twice a day.