Microsoft circles

My contact phone was ****** a year ago. I took out a new contract with a new phone number. I have tried several times to change this on their system, no luck. Now my account is in arrears and I need to access billing to update - access code is sent to ****** number so I am stuck. There is a Africa phone number that do not connect to a person, just buttons you push for 3 minutes, very frustrating, I need someone to assist me!!