Oxigen Recharge — not able to use wallet money

Website:

www.myoxigen.com

I have been using oxigen wallet from my mobile no [protected]. Now as it was a corporate no, it has to be handed over to company during my resignation. It has around 1470 balalnce in it. I asked customer care to change mobile no, they told me just remember your password, you will be able to use your money. Now i tried to use, app is asking for otp. I asked cc again, they changed their statement, you have to activate your no. I told them it is impossible to get the company corporate no again as i have left that company. I asked them to reverse the money into the bank account.
They said that we cannot help you out.
I have changed mobile nos in my paytm, nobikwik and phonepe wallet. But oxigen wallet had the worst customer care experience.

Please help me and resolve !

Regards
Kritarth Badgali
[protected]