Hello candidate,
Hope you are doing well,
Sorry , we are not allowed to share anyone's or our own personal information like phone number, social media accounts,etc on this platform.
Try to find his number in your text message app or find the incoming call/outgoing call of the exact month or even the date if you remember.
You can also search for a specific institute on google which the counceller talked about,there is probability of getting the number.

Hope this will help you

Thank you!!!