Bajaj Finance — payment not received

This is to inform you that i have purchased one lg 43" led tv through finance from bajaj finsev as per tax invoice no. K2724/1718/00758 dt. 22.08.2017 from khosla electronics pvt. Ltd. 21/1, moulana abul kalam azad road, (Dobson road), opp: howrah ac market, howrah - 711101 in which i got 50 % cash back under the scheme of lg cash back offer - fpd, at the time of purchase it was told to me by sales man & your bajaj finsev staff at that showroom that the amount will be credited to your bank a/c after 15 day's from realization of 1st installment, my 1st installment already debited on 3rd october 2017 & since then 28 days gone but still i have still not received the 50% cash back of the cost of lg tv,
Your quick action in this regard will be highly appreciated.
Regards
Anjali nagar
M - [protected]