What can I legally do if they took over half of my deposit and so far I have found 2 things that do not go with the information I was given?

I moved out of my previous residence over a month ago. I just received my return for the deposit I paid at the beginning of my tenancy. I was charged $200 for repainting one door in the residence. I was charged an extra $57 and some change for utilities that were not listed on the invoice of charges they sent to me. I haven’t gone through everything in detail just yet, but I have sent 3 messages to the company and one to the owner of the company who told me to refer back to another person for issues. What recourse do I have at this point? I have requested invoices from the contractor used to repaint the door, and I have asked for information on the extra charges for utilities and have not received so much as an acknowledgement of receipt of the messages I have sent so far. We are considering seeking legal counsel for this issue if it is not going to cost too much money as we are not very well off. I am in the military and will be contacting a jag officer about this issue also to see what action can be taken on the military side of things.