Select Portfolio Servicing This company keep posting NOD on my door knob...no loan, clear title, called, they did not respond Utah Utah

This company keeps posting door tags on the door knob of my property in Indian Wells. CA.   I have no loan,

I have clear title and a title policy.   I called SPS., they could not find anything in their records concerning my property after I gave them my address.   I refused to give them my social security number or any other information.   They schedule an auction for my property in my county.   Evidently, no buyer's paid the price they were asking.   I asked them to stop hanging tags or trying to contact me.