Bajaj Finserv — Cashback of Samsung refrigerator

Am Rahul my mob num is [protected], i brought my samsung refrigerator through Bajaj finance at online bajaj emi store, that time order I can apply voucher code of 3000 order is eligible for 3000rs cash back, once i cleared my first 3 EMI's without bounce, i can not get cashback, already paid 5 EMI;s without bounce, in the November I raised querry against cashback..they told me u can wait December mid...but not received...I raised another query on 07jan2022...now they told me system not reflected...you can give any written proof of cashback] but still i did't get my Cash back of Rs 3000, Loan ref num is "4010cdhe801022" dated 30 JULY 2021