Housing Society — faulty ceiling fan

I am a member of a cooperative hsg society in mumbai. The person staying below me has a fautly ceiling fan which needs to be repaired but he is not doing so even when i told him i am ready to bear the expenses. He has some grudge against me for not giving cooperation for a redevelopment plan in which he was a previous committee member and the current committee members to are his friends and they too are not ready to do anything about it. I have sleepless nights as the fan makes a lot of noise the whole night and coz of that my work is getting affected. So in such a scenario whom should i complain to get the problem rectified.