Honda 2 Wheelers India — leakage of engine oil and not received special gift and voucher

Address:

Haj Honda L F Road Cumbum, Theni, Tamil Nadu, +91

Dear Sir/Madam,
I purchased a black unicorn 150 on 23.10.2018.From the beginning I hadn't solved Leakage of Engine oil in my bike. They told me to change some parts and I changed morethan five times during last three service and other time also. Moreover they told me to offer a complimentary when I purchased this vehicle and they also told me to generate a special voucher of Rs.2500/-. But I didn't received so-far.I inquired them regards somany times.They told me "please wait" for more than 11 months. Kindly take this complaint and give solution.
Thanking you,