It seems the member has not updated his/her latest phone number. You may want to contact the member through other communication modes like email/chat and leave your contact details.
Alternatively, please report such profiles to us by following the below steps:
1. Open the profile and click the down arrow icon at the top right.
2. Select "Report Profile/Photo" then "Fake/Misleading Profile".
3. Select "Phone number is incorrect/unreachable" and click "Submit"
4. Provide any additional info/screenshot and click "Continue".
We shall disable the contact number after verifying the same.