American Homes for Rent company will not make repairs, return phone calls or emails and will not refund deposit, sd they didn't receive my rent when they did and wouldn't refund the money when I paid again Schaumburg Illinois

This company would not help me when my air conditioning didn't work, I had to pay to have it fixed myself, the when the heat went out and it was below zero they wouldn't send anyone to fix the heater until i threatened to report them to the attorney generals office.  They then said they didn't receive my rent money so I sent them the bank statement clearly showing they did receive the money and they said that wasn't good enough.  I called the bank and they put a claim thru,  and refunded the money to me.  I paid the rent again to avoid a late charge and I thought everything was ok until the bank said that American homes 4 rent denied my claim so the bank took the money back.   I called AH4R and they would not explain why they denied the claim, they wouldn't return my calls or emails and would not give me any direction as to what I needed to do since I would not renew my lease.  I finally moved out and received a huge bill from AH4R with all kinds of charges including "light bulb out in the garage", hangers in the closet, dusty blinds (it was a full month before they even sent anyone there to look at the house).   It was just a horrible experience and I can not get anyone to explain what happened to my rent and depoit.  Now I received a  bill from a collection agency saying I owe an additional $890.00!    I have filed a claim with the Illinois attorney Generals Office and a contacting my attorney.   The people in the Schaumburg, IL office that I had to deal with, Nasir Salim and Nancy (idiot) do not even pretend to care about customer service.