Condo damage dispute

Hi, everyone. So, last year I rented this condo in Bangkok for 15k baht per month, plus 30k deposit. So, on February 4th this year my contract ended with owner. So, I moved out on 4th Feb. So, via agent, owner sent me initial report of damages upto 45k but, I explained to agent I am not paying for damages that were already there. I showed them pics, before I moved there of damages to things like - sofa, wall etc was already there. He is charging me - 8000 baht for already torned sofa, 15000 for washroom tiles (those are fine),1000 for patch in mirror that was already there etc. Things, that I have no role in damaging at all. So, after further negotiations - he said he is going to deduct 20k baht from deposit. Still, I don't agree with many bogus claims of his. But, out of frustration I accepted it.

Agent isn't being helpful at all. I asked him to send pics of damages, from pdf files but he is not sending them and when I asked his/her name. No, further replies.

Today, agent sent me 1st pic, neither he or owner has been reasonable so far. If, agency is not there to help you, what's their purpose at all? I already sent agent, with pics before I moved there with time and date, I screenshot them. But, he isn't accepting it.

Talking with agent has been, hell - it is like I'm talking with a wall.

So, what options do I have - can anyone tell me any good lawyers to consult, should I meet with tax department etc.

Note - I am going back home, because I have some work, I will be back in a month or two.

Note - I went back to my home on July 10 last year and came back on January 17th this year. I have some health issues. So, how come I did so much damage if I wasn't there.