I bought my first rental with a tenant in it need help.

[Eric Devall]

I have called him two times and left a message saying I would like to meet him and go over some things. It has been 3 days and he still has not called me back. He had a lease with the old owner but it was month to month. He has paid the old owner the rent for this month and it was prorated at the sale so I got some of it. What should I do to try and get him to respond to me? Should I keep calling, send a letter, try and go over to the house? Please help thanks! Eric