Security questions

As per this article https://support.apple.com/en-in/HT202649

If you lost the trusted device or phone number associated with your Apple ID

As long as you still have your Recovery Key and remember your Apple ID password, you can sign in and add a new trusted device or phone number to your account. You can also remove any devices you may have lost, sold, or given away.

1. Go to your Apple ID account page and enter your Apple ID and password.
2. On the Verify Your Identity screen, select "Can’t access your trusted devices?"
3. In the pop-up window, enter your Recovery Key.
4. Go to the Security section and click Edit.

Remove the device you no longer wish to use to verify your identity. If you have additional devices with Find My iPhone enabled, you can verify them as trusted devices. You can also add additional trusted phone numbers.

The security questions can be reset , see this method .

Go to iforgot.apple.com and enter your Apple ID address and click on continue .

Check the box of I need to reset my security questions and click on continue .

Enter the Apple ID password and click on continue .

Check the box of answer your current security questions and click on continue .

A single question will be written in the field , enter the answer for it in the next field .

If you click on drop down arrow in the field you will view all the questions when the Apple ID was created , it’s your choice select any one of them and answer for that question .

And click on continue .

A pop up window will appear click on drop down arrow in each field , select the desired question and type the answer in the next field , apply the same procedure for rest of fields and click on continue the security questions are changed .

Take a screen shot of questions and answers and save them in notes or can write down in a diary for your records .

there is a contact link.

Apple ID Support

Apple ID Support (2) 

Apple Support by e-mail or chat    Work through the screens to get a chat option.    

Apple Support using Twitter

Or fill out and submit this form.          The form is for iTunes, but it will get passed to the ID Support section.  

i would try calling them or going into the store. Otherwise not that I’m aware of. You’d have to update your two factor verification and put in a new #, but you may need your old number to do that