So you're saying I should just try to call the Hotel's reservations department again and hope I get a different agent?

I did this early last week but the rez agent at the hotel said she couldn't since I had booked from a consolidator sign online but that I could give it to them at the front desk when I check in. Or, should I call the actual 1-800 # and try it that way? Makes total sense though that if the front desk can do it at checkin, the rez agent at the hotel can do it beforehand.