I have been living in the same apartment for more than 2 years. The original one year lease was actually not legal as the Landlord signed on a day that does not exist, 6/31/10. I informed the super of the building of the flea infestation in the basement and nothing has been done to resolve this issue. The landlord/owner of the building has not made himself available to me anytime I have had a concern. What can I do to ensure that the infestation will be addressed and resolved appropriately, other than send a certified letter of request of resolution?