Depends on the country, I suppose. But you'd likely have to be a citizen of that country to get a response. For instance, Malte Spitz sued Deutsche Telecom for his metadata.[0]

The Danish Logingsbekendtgørelse does not have that functionality, as they claim the data to be non-identifiable and requires a warrant. I do not know what the FRA rules are.

Although, honestly, I doubt the intelligence agencies would give you a truthful response. Only ministries are required to do so.

[0] http://www.zeit.de/datenschutz/malte-spitz-data-retention/

I wasn't under the impression that a cell phone company was the same thing as a national intelligence agency.

Nor was I under the impression that 'asking for' was equivalent to 'suing.'

Actually, it is _exactly_ what 'to sue for' means. See, for example, the usage in 'to sue for peace' [1].

[1] http://en.wikipedia.org/wiki/Suing_for_peace