How to Speak to a Tenant

[John Akhlaghi]

Good Evening This is John Akhlaghi, 

I just had a quick question for someone to help me answer to answer. 

Today my tenant was using the shower and the electricity in the bathroom for an hour. 

I was just wondering how I should approach my tenant to let him know that I have to pay these bills and I don't appreciate that he uses my utilities like that. 

Thank you and have a great day.