Grand Vivanta — Regarding refund OF RS 1,15,000 from grand vivanta

Address:	Grand Vivanta Vacations Pvt. Ltd. D-27, Level 3, Lajpat Nagar - 2 Central Market, New Delhi - 110024
Website:	grandvivanta.com/contact-us

I made a purchase of rs 2, 15, 000 package from grand vivanta . later i downgraded it to rs 1, 05, 000 . they need to refund me rs 1, 10, 000 but they refunded only rs 1, 00, 000 . they are still not refunding my rs 10, 000 .
i was making call to customer care since may 2022 but they are not giving positive response . they always give after 1-2 days they will refund my rs 10, 000.
if want to cancel my membership with them they are not trustworhy .
i want comlete refund of rs 1, 15, 000 (including rs 10, 000). kindly help me .