Knock on sellers door - Ethics Question

[Rob Randle]

So I am in a situation currently where I put a "strong" offer on a duplex that previously had an offer on it. I heard back from my buyers agent that the other offer was comparable and they are NOT giving me the ability to submit a higher offer but keeping my offer as a back-up. The property is not under contract yet but there has been some negotiation. In my opinion the selling agent isn't doing the seller justice by not giving me the ability to submit a higher offer. My suspicion is that the selling agent is representing the other buyers as well and wants the higher commission. I'm very interested in this property and a very qualified buyer. There is nothing my buyers agent can do. Do I knock on the sellers door?