Wirelessly posted (8700g: BlackBerry8700/4.1.0 Profile/MIDP-2.0 Configuration/CLDC-1.1 VendorID/100)
Look under the sponsor section of this forum for reputable and honest unlocking services. Many have reported good service from them.
I hope you get your money back from the one who took your money. You should post your experince with them here also, to warn others.