LG Electronics — Broken a legal promise/contract of delivering power bank when reviewed mobile in LG smart world application

Address:	[email protected]
Website:	in.lgworld.com/store/mobileWebview/gateway/mainSubConnect.dev?sendDirectFlag=Y&country=IN%7CEN

Dear Sir,
I have purchased LG G8X mobile on flipkart and there was an event organised by LG in LG Smart World application,
which states that whoever review their LG G8x mobile in amazon or flipkart and register for that event in smartworld app before 31st of Oct, LG will send a powerbank as a gift.
I have reviewed mobile and successfully registered for event by providing all the details asked by LG in Smart world application.
Now that Lg revoked event before deadline and when i asked i got a response saying "At the request of the promotion progress department, the G8X Review Event was closed early."
when i asked Lg regarding people who have registered before revoking i got response saying " i will be contacted within one month and Gift will be delivered within 2 months from the date of purchase."
its been more than one month and and no word from LG india yet when i contacted LG they will act as if they dont know about that event and they dont have any details regarding it
Note: LG smart world app was LG own app and it was preinstalled application in my new mobile
Attesting here documents of proof of that event & mail copies & video link on youtube " https://www.youtube.com/watch?app=desktop&ab_channel=AjMovieTuber&t=4s&a...⇄ "
Please do needful sir
Thank You Sir,
Vineeth Km