Reliance Digital — cashback not fulfilled

Address:

Madinaguda Chandannagar Hyderabad, Ranga Reddy, Andhra Pradesh, 500049

I purchased a Samsung Refrigerator (Triple Door) from Reliance Digital Showroom in Madinaguda, Hyderabad on 8.10.19 with finance from HDFC.
Reliance Digital staff have told us that a cashback of Rs.9000 from HDFC and Rs.3000 from Reliance Digital will be paid into our account after receiving payment of 3rd EMI out of 6 months.
So far 4 EMIs are paid up and 5th EMI will also be paid in a week days. But I did not get any cashback yet.

I complained to the person, a lady, working for Reliance Digital about 15 days ago. She said she will talk to her manager and get cashback credited within a week.

But even after two weeks, I did not hear anything from them.

I am unable to find time to go around the shop for cashback.