look into others phone call history. my mobile phone service provider was cracked

Early June 2007, someone told me he knows all my certain number of calls.
in order for me to believe that he has the certan detailed info, he provied some names that i had called and told me the home address of them.

he told me that it is only a phone call way if he want someone's call list.
I was amazed.

So I phoned the service provider, complaints, the service provider told me that only authorized personnel can check user information, But unable to explain whom can be the “authorized person”,they promise me they will start a process to check it.

two days later I received a text message, which inform me wait for a week. then two days later they called me they call solve my problem only if i can tell them the staff numbers or specific business name whom looked at my file. otherwise this is impossible for them to be find out the person, because their system does not log who looked at someones file and every local business office has the right to.

Five minutes later I received a message, told me that : Your problem has been solved, Please give us score.
solved? i don't think my problem is solved. since the person who can look other's file is not intented to hurt me, its not a big deal to me.