how do i stop my Formula disk brakes from squealing
Short answer is don't throw out you brakes just yet and a different material MIGHT make the squealing stop. 

What you are experiencing is quite typical. Mine are really bad sometimes if they are wet or have dust on them. A few max effort stops fixes it. Steps to address, in a rough order based on cost and hassle factor, and no guarantee of success...


Find a nice steep down hill and do a half dozen or more max effort stops from the fastest speed to can get up to. (safety warning bla bla bla). If that does not work, repeat after emptying you water bottle over the disc. 
Realign the brake calipers 
Clean the discs with meths/white petrol etc


if you can be bothered trying it, 'burn' the pads
polish the discs and pads with a very fine (400 or 600) wet and dry sand paper

Replace the pads with Organic ones.
Replace the disc rotors 
I'm out of suggestion, buy some ear plugs......