When you both husband and wife lives together, then anyone can have anbody's personal things shared. But in this marital disputes, everthing is private, personal. When you say from operator you got details, do you really mean they provided you the details without her presence? Dont ever try such things which will breach privacy of others. Are you having any cases on each other? If yes, there you can file application saying that you have an apprehension she speaks to some one , so her call data details may be produced with court order.
Also, if she has left you/abondoned you, not picking your phone , not asking any monetory releif so far, do you think she will keep silence for long...If you are genuine and she was not compelled to leave the house, then go and lodge a compalint to atleast police station requesting to ask her to come back to join you . Then you may file RCR restitution in court of nothing works and if you really want to settle down with her. Atleast you will be at safe side if you are not wrong.