Hyundai Motor India — exchange bonus and rc not received from plaza hyundai

I am a dedicated customer of hyundai for the last 20 years.

I had purchased one grand i10 (Hr 51 bv 4016) from plaza hyundai mohan cooperative delhi, in december 2018 in exchange of my santro zing.

In spite of constant chase up i have not received the following:
1. Exchange bonus of rs. 20, 000
2. The registration certificate (Rc)
3. High security number plate.

I had been in constant touch with mr. Chaterjee, the gm sales without any result. For the last one week, nobody is picking phone at plaza hyundai.

I request you to immediately arrange for the exchange bonus of 20, 000, rc and the number plate.

Regards,
Ravindra kumar jain.