Flipkart — Disney plus Hotstar 1 year

I ordered (Order ID - OD[protected] an hindware air cooler worth 8999 rs. Along with it i got an offer that if I will pay 349rd as advance payment then I will get one year Disney plus Hotstar membership. I paid rs 349 as advance payment and remaining amount for air cooler as cash on delivery. But I immediately cancelled the order as I wanted to make some changes to the order. The main product which was the air cooler got cancelled immediately but it's been 5 days, they have not cancelled the membership of Disney plus Hotstar, which should have been cancelled by now. I called them numerous time but they never provided me any satisfactory response. They have not refunded me my 349 rs till now. I have Raised several complaints but all are in vain. My order I'd is :
Order ID - OD[protected]