Apple India — Scam resellers

Address: Siliguri, West Bengal

Placed an order from https://theimaginestore.com which is an official Apple Premium Reseller online for iPhone 14 Pro Max - the website shows an Instant HDFC Card discount offer.
The offer was not given at time of checkout and when i contacted their Customer Support, they said that the offer is no longer there.
Also they want 2% cancellation charges which is not mentioned anywhere on their policy pages on the website.
No response from Customer Support anymore and no one is picking up the phone.
Please help.