Advice on Systems and process

I bought many homes and I’ve also flipped Holmes and sold homes etc

I was using property radar for list and then BatchLeads to skip trace them and then Go High Level two SMS blast and ringless voicemail drop

I’ve tried over 4000 contacts and I’ve had zero lead so far to either help them sell or purchase their homes that they are delinquent on

Is anyone having any luck on this or the system is just not correct?