On Oct 2014, I had a water burst in my unit, which caused some water damage to the unit below. They gave me one invoice of carpet drying right after the accident, I payed that invoice immediately. Nearly a year later, now they suddenly give another two invoices of fixing the wall paintings and the cracks on their electronic board, saying they are all resulted from the water damage which happened a year ago. The building has been more than 20 years old. I am not convinced that the damage they have described are all from the water leaks and even if they are, I believe the damage might have been enlarged because they did not fix it right after the accident. So my questions is, do I still have to pay those invoices under property law? Thanks in advance.