You will find that Google is very open to suggestions of alternative telephone numbers to show in its information boxes.
There is a thorough explanation of how this works (with some wise comment at the end) in
this item from BBC Radio 4 You and Yours.
The whole basis of Google searches, as with much of what we use as "knowledge", is that information is provided on the basis of availability, not authority.
Any suggestions about how to change this fundamental aspect of how we live these days?