Jaquar — overflowing / leakage in concealed flush tank

Address: Kumarpal Niwas, 28, Prarthana Samaj Road, Vile Parle East, Mumbai City, Maharashtra, 400057

Website: Overflowing / leakage in Consealed flush tank.

My consealed flush tank is overflowing / there is leakage since 29/12/2019, 2 am.
Even in past, i had same complain and your technician came and repaired overflowing flush tank.
Water is precious, we need to conserve... It's being wasted since last 20 hours
Please send your technician asap.
I purchased in feb, 2019, and installed in march end 2019.