Baldeep said:
Just last night someone called me … she sounded like she was drunk.
And you want to change your #? Why?
You may want to consider selling the SIM card for say maybe… $500… As a selling point be sure to state that the phone frequently receives calls at night from drunken females. In few minutes after your post you will have a purchase offer.
On serious note, dial 611 on your cell to contact service support.