Aircel — aircel rejecting port changing request

Address:

Chennai, Tamil Nadu, 600092

I've been using my number for the more than 10years & now facing issues as aircel network was shutdown.
Hence gave port changing request & the same was rejected twice by aircel saying incorrect port number. But the same upc only im getting if i send sms to 1900.
When aircel is not able to continue their service then what is the point of rejecting the request.
I need my number as i said have been using it for years.
Help me to reach out aircel executive to solve my problem.
Email id is [protected]@gmail.com