Jaquar — Product is under warranty but not providing service

I have bought bathroom fittings from jaquar some days ago.After using its products one big and expensive basin cock(tap) starts leaking.several times I complained to customer care but no jaquar executive visited my place till date.Every time customer care person tell that sorry 'maaff kr dijiye'.I have never expected this type of behaviour from such a prominent company.please do the needful because my whole family is suffering due to this.