Hey, don't panic. You might get lucky. The switches get dirty over the years and sometimes cleaning them will get them working. My power seat swith had a miraculous recovery after I removed it and washed it out with WD-40 once. Be certain there is power on the load side of the fuse; you might need to check the terminals on the bottom side of the fuse block.
Anyway, It's probably somethign simple, it will take patience. Find the electrical parts that all the failed items have in common, then check it out. Sounds like it could be a loose ground or broken wire.