Seriously though, you only need to attach the safe onto 2 SIDES with 2 Bolts or Coach Screws per side, not 3 sides, so you only NEED 4 bolts or coach screws in total, re-read the schedule 4 bit again.
Having said that I used a total of 8 through bolts on mine (yep that' s right, 8 Bolts right through the wall and the pad) and set them with cement permanently. Another option is Chem Bolts, expensive but work real well. If they do still insist on concrete pad/ brick wall, then build a small lean too/bunker by the side of the house with real solid lockable doors and plonk it in there. No law saying it has to be inside the house!