I am looking for some advise as to where to submit a complaint about an ex-landlord. I rented an apartment from this person and a guarantee was required. Left the apartment over a year ago giving the necessary notification by carta documento. He continues to refuse to release the guarantee and has stated he will not reply to any of my emails. I have had significant health problems which have prevented me to take action, but I am now healthy enough to proceed with this problem. I am not sure which government agency to go to and/or how I can proceed. Any ideas on how I can proceed would be helpful. Thank you for any help you can provide.