Can't you do this yourself?
If, for some reason, you can't do this via the normal number porting process then you'll need to contact 48 support about it.
See the link in my signature below or email them at support@48months.zendesk.com
They generally don't respond to posts or requests here on the Community Forum.
By the way, it's not a great idea to post your personal details such as phone number on a public forum like this.
