You can check the Gulf Horizon Hotel (if im not mistaken with the name) located at B-Ring road between Sana R/A and Crazy Signal.

I think the SAPTCO Office might be inside this hotel.

your landmarks are; from sana, you'll gonna find an internet cafe near this hotel on your right, then if you're coming from crazy signal you'll be passing the new KFC before seeing the hotel. it will be on your left side.

hope it helps. ^_^