Toyota — after service engine got white smoke

Address:

Kalamassery, Kerala

I have done oil service and full inspection for my innova car through toyotta authorized dealer kerala, and the dealer said 16000 to pay, i have paid and drive only 50 k. M 23 days, engine sound and white smoke came, full vibration, while delivery time they said engine ok no problem, balance they have reported to me and i asked upto 5000 k. M drive means any problem will come they said no problem after that need to change all they have inspected,

How they have check the engine and after 50 k. M gone.