Stolen mobile phone – have MAC address

Hi,

Had my mobile phone stolen on a day out, stupidly it did not have a lock or pin on it 🙁
Someone has logged into my Netflix account 5 days later and have the MAC address.

I have now changed my Netflix password.

What is the play? I do not wish to get the police involved (if possible) and have an area in which the login happened.

Any advise would be greatly appreciated.

Thanks all!