Saravana Stores — Very lazy service to customer

I bought Haier washing machine yesterday. They said technician will come for installation. But upto today nobody has come. I call them several times to book technician. They are not responding properly. Evening only they book the technician. And Haier ccc said technician will come tomorrow. I will go abroad tomorrow how can I get technician. Even Saravana stores GN chetty road phone no every time showing busy even very early morning. That means they put the phone network out of order always