Jaguar — Jaquar flush/commode

"Whenever we flush it's water comes flying out." It's been two long years we have been calling on customer support to resolve our problem. In this time many Jaguar representative have visited our house to check the issue but they always say one line - " dekhte hai, karte hai" .., but nothing has been solved so far.
There are total five Jaguar flushes in my house, but only this one flush has problem.