Duplex purchasing - non responsive listing agents

[Stephanie Simmons]

If you were a listing agent for a income producing duplex - what would cause you to not respond to another agent inquiring about your listed property?

There are a few I am interested in (and I am an agent) - but before I spend time trying to work around tenants to see the property I want to know if the sellers can provide copies of the leases and proof that the tenants are paying. Am I asking too much before getting under contract?