Dude I hate to be the bearer of bad news. I'm real green when it comes to this but without knowing what the person did to the phone besides brick it. I'd say try and and see if you can get to the boot laoder mode.
1) Power the phone off then press & hold the pwr button till you see the HTC Logo then imeadiately press & hold the volume down at the same time
2) Follow these guys instructions to the 'T' (DFT HSPL RSPL WP7F3) & [ROM] (First) HTC 7 Pro 7.8 & HTC Arrive 7.8 Sianto Edition AL or try & reload the stock rom.
[DFT][Updated!#3] HSPL / RSPL for HTC WP7 First Generation - xda-developers
[ROM] (First) HTC 7 Pro 7.8 & HTC Arrive 7.8 Sianto Edition AL - xda-developers
3) Thank the creators of the threads i'm a messanger
4) I really don't need to tell you but I will why would you pay someone without 1st checking to see if they did the job right. Furthermore, why would you pay espically when all the notes are in this forum & on XDA's DUHHHHH!!!