Society levying fine against agm rule

The rule during last year AGM made was "No flower pot or any other item shall be kept at a place from where it can fall down or damage exterior of building". After rule was made, I kept flower pot in box grill which is secured with mesh. It does not pose any safety issue. My society sent me letter to remove flower pots or otherwise will charge fine. I replied them asking "why this decision is taken against the AGM rule and why other people are not asked to remove any items?". I asked them to reply to my query and I will remove the same immediately. They did not reply to the letter even after sending reminders and are continuing levying fine of Rs. 2000 pm since last seven months. What is to be done in this case? Any help appreciated.