Okay, if your agent can't get in contact with the listing agent, here's what he/she should do:
1. Call the other office and ask to speak with the manager or broker of record (boss). It's the broker's (office owner's) responsibility to supervise his/her agents and manage their listings.
2. If that fails, have his/her (your agent's) broker make the call.
3 If that fails, have his/her (your agent's) broker call the MLS Zone Chairperson. The zone chair will reach out to the listing broker and if they don't respond, can sanction them. This person also has the authority to authorize the your agent's office to contact the seller directly.
Now, different MLS's (Multiple Listing Services) have different policies, but will usually have a similar escalation path. Judging by the information in your subsequent post, this listing is in the LIBOR MLS (the big MLS), and the steps I gave you above are for that MLS (I'm a participant in that MLS and use to be an chapter officer and director).
Lastly, it's quite possible there's an issue with that listing. Of course, I'm sure you'd be fine with that if someone would just respond. If the property's not all that great, sometimes you're better off just moving on - especially in a buyer's market.
Hope that helps!
Diallo J. Stevens, REALTORÂ®, CRS, GRI, SRES, RECS, e-PRO
YouTube Channel: http://www.youtube.com/DialloStevens
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