Idea Cellular — Activation of Aircel number

Address: Sethiyathope VEERAMUDAYANATHAM

Respected sir/mam,
My name is mahibala my mobile number ([[protected]) was under Aircel and later I ported it to idea. Now the problem is the number got deactivated due to non usage (I went overseas) and not it's been moved to the parent operator ie., Aircel.i can not get port number and reactivation Also Aircel network shutdown Because of which I couldn't get back my number.
I've been trying to reach out the customer care number and various email id's but there wasn't any response at all. I kindly request you to help me to get back my number by any means. Thanks in advance!