Possible to obtain phone number of "anonymous" caller?

Yesterday a friend with T-Mobile cellular service received a harassing
call from an "anonymous" caller - when the call came in, no Caller ID
info was displayed on her phone. Is it possible to contact T-Mobile
customer service, have them check her incoming calls and obtain the
phone number of this anonymous caller? Thanks

Answer is no you would have to give t mobile a cort order to make t
mobile find out who it is and then they wont tell her or you they
would only tell law enforcement.

On Fri, 01 Jan 2010 12:11:22 -0600, Dave Allen
<daveallen@ihatespam.com> wrote:

>Yesterday a friend with T-Mobile cellular service received a harassing
>call from an "anonymous" caller - when the call came in, no Caller ID
>info was displayed on her phone. Is it possible to contact T-Mobile
>customer service, have them check her incoming calls and obtain the
>phone number of this anonymous caller? Thanks
>