Use of "having"

[englishstudent]

Hi,

I am used to the use of 'having' in these sentences:

He's having a wonderful time.
The phone rang while we were having dinner.

I read the following in the news:
"This is a question relating to an ongoing investigation and we're not having any further comment on the investigation while it's ongoing," White House press secretary Scott McClellan said.

I understand what is meant here, but I am wondering
1. if the use of we're not having here is considered colloquial,
or if it is grammatically correct.
2. if this usage is acceptable in BrE

I know the usage - "I'm not having any of this" but can "we're not having" be used to mean that "a statement won't be forthcoming"?

Talking about "having" I am reminded of something I read in a book about "do you have"
and "have you got" and I thought I would share it here.

A: Excuse me ma'am, do you have any children?
B: Yes, from time to time.

:)

Thanks

[Tdol]

It's correct, IMO. I think the progressive form just stresses that the situation is temporary and related to the investigation. I think the meaning is more 'there won't be any' rather than the idea of it being unacceptable.