Folder Lock & My Seagate :-(

i have a 1TB seagate goflex external hard disk which i had encrypted with folder lock portable...dont know what struck me yesterday.i was trying to remove the folder lock encryption & instead of unlocking i deleted the whole drive 7 with it all my data of around 850GB...please help me get back my data...
P.S. - i have tried almost all the data recovery softwares but none were helpful which i believe is due to the encryption
plz provide some suggestions....