My owner hold 16k for electricity bill and not refunding the excess amount

My owner have hold 16k for my electricity bill after inspecting the house and after doing FNF settlement from my deposit he hold back 16k for electricity bill, he did confirm the same on the email marking the society office, however when we got the bill it was only 7k and now owner is not refunding me the excess amount stating that he have spend money on pest control, switches and all , I stayed in that house for more than 5 years and spend over 19 lakhs on rent during my tenure and no deduction were discussed at the time of holding my 16k back apart from electricity bill, i did send an email toh police station that that he his mentally torturing me and I will not break his lock but put and external lock so that no one holds the possession of the house until the matter is resolved, i did went to the society to put the external lock but as secretary of the society assured me he will get the owner and us sir together and solve this matter, i did not put the lock however no MSG recieved from society for a meeting with owner, insted owner went to the police station lying that I was breaking the lock, I got the evidence who was present at that time when on the side Wass I was installing the hook to Tye a Chain and I stopped my self on secretary assurance, can someone please advice me how can I get my excess money back from the owner that he owes me now as per the email confirmation that I recieved from the owner after FNF settlement.