The New York Nexus Cafe 

my upstairs neighbours shower has leaked for some time and has caused considerable water damage to my ceiling. He claims he has fixed the leak my re-grouting his shower. It worked for a while but now it is back again.
Where can I make an official complaint (forget about my condo association) as he has not returned my calls and is completely ignoring me and the damage is getting worse.
He is a terrible neighbour also.

Take a lot of photographs, document any interaction between you and your nieghbor, have witnesses if possible when talking with nieghbor and taking pictures. Save phone bills indicating how many calls made to nieghbor and condo board. File written compaint with condo board (make copies of everything.) Get estimates of damage repair. Then sue his ASS.

If you live in a condo building, I suggest reading the condo association by-laws and see what the process is to address this type of problem. Maybe you can get the condo association involved on your behalf as well.

In the meantime, document everything and stick with written correspondence with your neighbor. Send stuff regular mail and certified mail-return receipt requested. Also email him and print out the emails. Proving that you've contacted your neighbor is easier with paper.

If you know an attorney, maybe ask him or her to send your neighbor a semi-threatening letter on their letterhead. Sometimes a good scare does the trick.

If all else fails, sue him. Realize though that this is the last resort because it can be somewhat costly (attorney's fees, court filing fees, etc.). But water damage costs you more probably.

Good luck.

I agree with the things said above. I would also write a letter to the condo assoc. and in it, document all of the previous times you have contacted them and put them on notice of the situation. Any thoughts from your next door neighbours? Do they have damage resulting from the leak as well? Water damage is something that can eventually cause damage to a lot of people's units and to the building as a whole (mold is one negative outcome I can think of).