Wazirx — Login problem

My name is ramandeep singh. I opened account with wazirx. My account registered with my email [protected]@rediffmail.com. Suddenly I changed my mobile. Now I facing problem with login. Can't login due 2fA security. I lost recovery key. Every time I try otp is invalid. Solve the problem or give my deposit money 20000rs back. My account kyc fully approved. Later I sent documents related to recovery key. But not responded by wazirx. No satisfaction. Already two days gone for asking my account recovery key.. I registered [protected] contact also.