Sterling Holidays Resorts — Illegally deactivating my membership

Address:

R-2/91 (G-1) , Raj Nagar , Ghaziabad , 201002

I purchased a membership no 218741 of Sterlingholidays in 2004, when I tried to book a holiday for the first time in July 2022, I was told by customer service that my membership has been terminated in December 2021 because it remained Dormant due non usage and pending charges .
I requested them I am ready to pay whatever is due but in spite of repeated mails, an automated mail is sent .
I got retired in February this year and wanted to start enjoying holidays but am deprived . My membership is valid till the year 2050 .
Kindly help in reactivating my membership .
Thanks
Anshul Agarwala