Advice on property manager not replying to calls for over a month

[Sam Nichols]

Hi all,

long time lurker but I've run into a spot of trouble.  I have a property in Memphis that the property manager has been managing fine for > 5 years and they recently became unresponsive to calls/emails and have missed sending payment to me.  My question is what are next steps?  I imagine a lawyer is part of it but I also likely need a new PM and what even is the course of action to get keys/info/etc from the existing (unresponsive) PM?  Best solution would be finding a new PM that can just take care of all of this for an additional fee...