Doens't sound like your missiing anything other than a reasonable explanation. Contact the manager of the office and ask for an explanation. If satisfied that everything is done proceed with the listing agent. If you are not satisfied witht eh agent then ask the manager to assign a different aget to the listing.
You listing agreement is with the brokerage and not with the specific agent. If you are reluctant to proceed with the brokerage then consult with an attorney to get you out of the listing contract.