unhappy tenant on 07/10/2010

There have been several outbreaks of bedbugs for three years and not getting any better. Our landlord seems not to be too concernced about this as he does not live here.
APTS INFECTED:
AA4
BB1
A1
A5
C5
D5
D1
AA3
I am also sure there are many other apts infected whom are not reporting this. There are 39 apts in this building and at least 20 are and still is infected. What do we do Please help!! persons are all bitten up and have thrown out thousands of dollars in furniture without