Hero Motocorp — sale of defective scooter

Address:

Kamrup Metropolitan, Assam, 781012

I have taken delivery of a her meastro edge scooter on 17.7.2017 from m/s hi speed bikes, guwahati-781011, but after driving some time i found engine oil is leaking out. Initially i ignored it suspecting excess engine oil is draining out, but when it does not stopped, on 22.7.2017 i have approached to the dealer workshop to set right the problem and i was told that gasket has torn out and they replaced it and with an assurance of rectification of the problem. But, actually the problem was not rectified and i was bound to see dealer for proper rectification of the problem, after keeping the scooter for some hours, the manager (As said) over phone intimated me that, gasket of piston block is damaged and causes draining of engine oil. The scooter yet to be delivered. Now, i want to say why a scooter with manufacturing defect has been sold? I want a replacement for the defective one.