Pune Municipal Corporation — leakage

Address:

Flat no 906 building no B5 runwal seagull handewadi road hadapsar puneabidy, 411028

We are having leaking from flat 1006 b5 runwal seagull in our flat flat no 906 b5 since 2 months flat owner is not picking the phone and not replying to message, same problem was there 4 yrs back that time also he has not cooperated we have contacted tenant of flat 1006 to inform his owner but he is also not replying. Four yearsback same problem was there we did repair by paying 25000 he has not paid a single rupee. So what to do now our tenant has also contacted him but no reply from his side