I need change contac...

Hi Lizzy, 
For instructions on changing your mobile number, please visit our Help Centre article:https://www.luno.com/help/articles/***
It takes 48 hours for the mobile number change through account recovery to take effect. 
If you require further assistance to update your mobile number, please contact our Support Team directly by logging a ticket here:https://www.luno.com/help/tickets/new?category_id=33
Remember to let the team know what your previous number was, and what your new number is and they will get back to you as soon as possible. 

Thank you.