Wonderchef Home Appliances — blackening of the frying pan n wok after one use only

Address:	413612
Website:	www.wonderchef.in

I have ordered this 5 piece set... After a singal use it turned black... The same day i have aend a mail to them along with the pics but didnt got any reply...
Cant belive the have such thired class quality product i spent 3000 on it n it is turned black in a singal use.. What the hell n u dont even have a sence of responsibility to reply... Such a money maker... Insted of spending on advertise focus on quality... I need a answer...