You ever call a number and it's the receptionist?
You have to forcefully ask:
"Can I speak to the owner"
"WHY DO YOU WANT TO SPEAK TO HIM"?
Because the gatekeeper already knows you're randomly calling to sell something, her guard is up...
unlesssss...
you act like you've known the owner for years... all by changing one word from your question.
Can you guess?
Instead of asking for the owner, ask:
"Can I see Jim?"
Just research the owners name and you will seem like you've been doing business with him for a while so the gatekeeper will think this is important and he must be notified immediatley.
It will increase the chances of you actually entering the owners layer.