The first thing that you must do is determine definitively whether you or the landlord are responsible for the damages / repairs that you are complaining of. If anything is your responsibility (such as pest control), then the landlord will not be required to respond to your complaints/requests.
If an issue is the landlord's responsibility, you have a few options for addressing it. One option would be to file a complaint against the landlord asking a judge to issue an order that requires the landlord to repair the problems. A second option would be to repair the problems yourself and deduct the cost of the repair from your rent. If you intend to exercise the repair-and-deduct option, you must first notify the landlord of your intent to do so and give the landlord an opportunity (a reasonable amount of time) to fix the problems.
I hope this information helps answer your question(s).
~ Kem Eyo
The above answer is a general explanation of legal rights and procedures. It does not constitute legal advice. Nor does it establish an attorney-client relationship between the individual posting the question and the attorney providing the answer.