No worries, you can get it done by contacting Account Security Team via phone support. To find the phone number of your country, click the link below.
Contact Apple for support and service - Apple Support
Importantly while calling Account Security Team, keep the Temporary Pin handy. To generate temporary pin, login to your Apple ID account and on the bottom of the page you will see the option to generate pin. Once the pin is generated, it remain valid for 30 minutes. Account Security Team will verify your account using the pin number.
If you have any queries, please feel free to ask.
Thanks.