It sounds like you really need to talk to your brother and sister about what to do here. Tell them everything that has happened so far.
As Ragman has noted, this site mostly has western posters, so few of us have personal experience with arranged marriages.
It sounds like the fellow you are dealing with is more westernized than your family so you really need to sort this out with your family.
I will say - if you're not very
comfortable with meeting him alone, do not do so.