Number portability simplified

So, this diagram shows how the process of moving your telephone number between cellular providers is going to work. I bet it can be simplified thusly:

1. You contact the new cellphone company
2. You tell them you want your number moved
3. They contact your old company
4. The old company ignores your request
5. You ask the new company about it
6. They blame the old company
7. You contact the old company to investigate
8. They blame the new company

What could be simpler? (Hat tip: Dennis)