Bangalore owner - damage to our vehicle, threat to vacate and overcharging

We had gone to our hometown for 20 days in December. Our bikes were parked in the building parking. We had informed the guard that we will be away. While we were away, the owners & building manager got the parking retiled. We were not informed about this over message or call. Our bikes were dragged end to end in the parking and we came back to find them covered in cement stains with the chains rusted. The owners took on the defensive when we called and were trying to explain that we should have been informed of the work that was going to happen, it turned into a heated argument and we were asked to vacate the very next day - verbally (Our rental agreement mentions 1 month written notice from either side to terminate the lease) Later in the night, since we were too scared about having to vacate and were feeling powerless, we wrote an apology for disturbing them by calling them about this issue. They said no worries, and that they can sort it and also take care of the damages to the bike. After this the manager warned us not to call owner ever again and to only communicate with him. In that month, we sent him the receipt for taking the bike to the service centre, and later the proper bill with gst, etc. All this was sent on Whatsapp to the manager. In the next month, we cut this from the rent we pay to the owner. Around 10 days after sending the rent, the manager called us and asked to pay the remaining amount, saying that the owners never said anything about paying for damages. When I shared the screenshot of the message from the owner, he said that they were not informed about this in advance. So either we can return the money or leave the house. He also said that we have been creating issues and that we should look for another place (this was 9 Feb, but it was not in writing) We paid the bike repair amount back to the owner and started looking for other flats. 15 days later (22 Feb), we sent in our written notice to vacate the house in 1 month. Our billing cycle is 6th every month. Now they are saying they will charge us until 6th of April rather than until 22nd March when we will be vacating. What should we do? They have 2L as security deposit with them.