She says she's conflicted

[RedHawk98]

This parasite is not worthy of your time or mental energy.
He is just some lowlife scumbag that has exploited a gap in your relationship.

Calling his phone number will achieve what? He'll either laugh at you, manipulate you or use it against you somehow. Why give him the satisfaction?

There is only really one legal and moral way to get rid of him.
Show yourself to be a far better man than him. Show that you are capable of fulfilling the needs that this clown is doing, but much better!

At the moment, everything you're suggesting is playing straight into his hands.