• Urgent please: regarding call recording

I belong to a police family background and my family members are planning to get my voice call detail, and they already have cal log detail. I am 22 years old girl, scared! please Help.
1) Is it possible for police to get call record in mp 3 audio of six months without planning typing of phone number?
2) What are my rights in this?
3) whom should i contact the Mobile company or cyber crime for removing such conversations?
4) will they help me in this? (the mobile company)