Seller wont give any mortgage Info

[Leah Bonner]

Today  i began to call some for sale by owner houses

It went not so hot, but i know its a numbers game, lots didnt answer, some straight up said no to owner financing, and some said they recently listed with a realtor, BUT

Whenever i ask about there mortgage info they told me it was "none of my business" (hard to create rapport after that doozy) 

The reason i need to know there ballance info is because i will then ask if they would consider owner financing the house/ Lease to own. Am i approaching it wrong? Should i ask if they would consider financing first? 
HELP